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Jun 25, 2011
06/11
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NASA -- Images courtesy sohowww.nascom.nasa.gov/ SOHO Project , NASA's Goddard Space Flight Center
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View an eoimages.gsfc.nasa.gov/images/imagerecords/1000/1331/superflare.mov animation from the Extreme ultraviolet Imaging Telescope (EIT). At 4:51 p.m. EDT, on Monday, April 2, 2001, the sun unleashed the biggest solar flare ever recorded, as observed by the Solar and Heliospheric Observatory (SOHO) satellite. The flare was definitely more powerful than the famous solar flare on March 6, 1989, which was related to the disruption of power grids in Canada. This recent explosion from the active...
Topics: What -- Extreme Ultraviolet Imaging Telescope, What -- Sun, What -- SOHO, What -- Earth, Where --...
Source: http://earthobservatory.nasa.gov/IOTD/view.php?id=1331
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30
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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Solar Wind and the Earth's Protective Magnetic Shield Illustration of solar wind heading into space and impacting Earth's protective magnetic shield, its magnetosphere. The particles are seen heading out in all directions, but with some of them hitting our magnetosphere. Earth's magnetic field lines are shown in concentric purple ovals, pushed on by pressure from the Sun and elongated on the side facing sway from the Sun. If the solar wind is particularly strong or if a solar storm impacts us,...
Topics: What -- Sun, What -- Earth, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/Particle/solwind.html
37
37
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 37
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Views of the spacecraft: -Various SOHO images from the time that ESA engineers were building the spacecraft. Besides the work performed at Matra Marconi facilities, the SOHO spacecraft was prepared for launch at the SAEF-2 facility of the Kennedy Space Center before being fueled and encapsulated on top of the Atlas-Centaur AC-121 on pad 36B.
Topics: What -- SOHO, What -- Atlas, What -- Centaur, Where -- Kennedy Space Center (KSC)
Source: http://sohowww.nascom.nasa.gov/gallery/Spacecraft/soho_photo1.html
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23
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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The complex distribution and mixing of magnetic polarities (here displayed as yellow and blue) form a "magnetic carpet" over the entire Sun (upper right panel). The upper left panel shows the EUV emission taken simultaneously by CDS from plasma at the temperature of 250 000 K. The lower panel shows an overlay of the two images. Sequences of such images show that many of the transition region brightenings correspond to changes in the magnetic field.
Topics: What -- Sun, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/cds024.html
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25
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 25
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SOHO-EIT image in resonance lines of eleven times ionized iron (Fe XII) at 195 Angstroms in the extreme ultraviolet showing the solar corona at a temperature of about 1 million K. This image was recorded on 11 September 1997. It is dominated by two large active region systems, composed of numerous magnetic loops.
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/eit029.html
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37
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 37
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SWAN Lyman?alpha full sky reduction factor (in ecliptic coordinates).
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/Particle/swa002.html
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28
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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We last saw Comet Machholz as a bright comet streaking past the Sun on Jan. 8, 2002 (see Hotshot from 2002 [ http://soho.nascom.nasa.gov/hotshots/2002_01_08/ ]). Well, guess what! It's back! After over five years of swinging through its elliptical orbit out in space, the same comet has returned. Though not as bright as it appeared last time around, it is hard to miss as it rises from the lower left in our LASCO C3 coronagraph's field of view. Note that the comet's tail always angles away from...
Topics: What -- Sun, What -- COMETS, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/pickoftheweek/old/06apr2007/
20
20
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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This week SOHO observed sunspot 944 coming around the Sun's eastern limb--for the fifth time! Usually sunspots form and dissolve in a matter of days or weeks, but this spot has real longevity-it has survived for an unusually long five solar rotations. Here we put side-by-side images at almost exactly three of the five rotations. The Sun rotates about once every 27 days. A sunspot receives a new number each time it reappears, so three months ago this was called Sunspot 930 when it blasted out a...
Topics: What -- SOHO, What -- Sun
Source: http://sohowww.nascom.nasa.gov/pickoftheweek/old/02mar2007/
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23
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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Spacecraft illustration -- SOHO was launched in December 1995 by an Atlas Centaur rocket and became operational in March 1996. SOHO weighs about two tons and with its solar panels extended stands about 25 feet across. It was launched in December, 1995. SOHO will continue operating well past the next solar maximum in 2001. (Image credit: Alex Lutkus)
Topics: What -- SOHO, What -- Atlas, What -- Centaur
Source: http://sohowww.nascom.nasa.gov/gallery/images/SOHOLower2.html
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18
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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Scientists with the instrument were surprised to discover that the Sun has tall gyrating storms far larger and faster than tornadoes on the Earth. So far they have detected a dozen such events. They occur most frequently near the north and south poles of the Sun and are almost as wide as the Earth. Steady wind speeds of 50,000 km/h and gusts ten times faster occur in the solar tornadoes.
Topics: What -- Sun, What -- Earth, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/cds022.html
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18
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 18
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EIT 304Å image details many solar features and some elongated prominences -- Prominences are huge clouds of relatively cool den EIT 304Ôø_ image details many solar features and some elongated prominences -- Prominences are huge clouds of relatively cool dense plasma suspended in the Sun's hot, thin corona. Emission in this spectral line shows the upper chromosphere at a temperature of about 60,000 degrees K. Every feature in the image traces magnetic field structure. The hottest areas appear...
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/eitcolor5.html
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19
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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A comparison of two EIT images almost two years apart illustrates how the level of solar activity has increased significantly. The Sun attains its expected sunspot maximum in the year 2000. These images are captured using Fe IX-X 171 Ôø_ emission showing the solar corona at a temperature of about 1.3 million K. Many more sunspots, solar flares, and coronal mass ejections occur during the solar maximum. The numerous active regions and the number/size of magnetic loops in the recent image shows...
Topics: What -- Sun, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/eit171cf.html
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32
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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Huge sunspot group -- Active region 9393 as seen by MDI hosted the largest sunspot group observed so far during the current sol Joseph B. Gurman Normal Joseph B. Gurman 1 0 2001-04-11T18:27:00Z 2001-04-11T18:27:00Z 1 NASA GSGC 1 1 9.2511 800x600 0 0 Huge sunspot group -- Active region 9393 as seen by MDI hosted the largest sunspot group observed so far during the current solar cycle. On 30 March 2001, the sunspot area within the group spanned an area more than 13 times the entire surface of the...
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/bigspotfd.html
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41
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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Spacecraft illustration -- SOHO was launched in December 1995 by an Atlas Centaur rocket and became operational in March 1996. SOHO weighs about two tons and with its solar panels extended stands about 25 feet across. It was launched in December, 1995. SOHO will continue operating well past the next solar maximum in 2001. (Image credit: Alex Lutkus)
Topics: What -- SOHO, What -- Atlas, What -- Centaur
Source: http://sohowww.nascom.nasa.gov/gallery/Spacecraft/SOHOLower1.html
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79
Dec 8, 2009
12/09
by
NASA
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The Solar and Heliospheric Observatory (SOHO), a joint project of the European Space Agency and NASA, took this sequence of images with the Extreme Ultraviolet Imaging Telescope, one of the observatory's 12 instruments. Easily visible on the lower left side is an "eruptive prominence" or blob of 60,000 F (33,315 C) gas measuring more than 80,000 miles (128,747 km) long. When the observatory took the image on February 11, 1996, the blob was traveling at more than 15,000 mph (24,140...
Topics: Sun, What -- SOHO, What -- Extreme Ultraviolet Imaging Telescope
Source: http://grin.hq.nasa.gov/ABSTRACTS/GPN-2002-000120.html
70
70
Nov 5, 2009
11/09
by
Image courtesy NASA/ESA
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On December 3, 2002, people in Australia received a rare 32-second celestial show as the Moon completely obscured the Sun, creating a ring of light. Solar eclipses provide experts an opportunity to study the Sun’s outer atmosphere, called the corona. This total eclipse was the first to cover Australian shores since 1976. The next is not predicted to occur for several more decades.While people in Australia were observing the solar eclipse, the Solar and Heliospheric Observatory (SOHO)...
Topics: What -- Moon, What -- Sun, What -- Opportunity, What -- SOHO, What -- Earth, What -- Extreme...
Source: http://visibleearth.nasa.gov/view_rec.php?id=16291
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18
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 18
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Joseph B. Gurman Normal Joseph B. Gurman 2 2003-03-04T14:52:00Z 2003-03-04T14:52:00Z 1 NASA GSGC 1 1 9.2511 800x600 0 0 This LASCO C2 image shows a very large coronal mass ejection(CME) blasting off into space on 2 December 2002. It presents the classic shape of a CME: a large bulbous front with a second,more compact, inner core of hot plasma. This material erupts away from the Sun at speeds of one to two millionsmiles (or km) per hour.
Topics: What -- Sun, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/20021202c2cme.html
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22
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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CDS can produce images of the Sun at many wavelengths. In addition to hydrogen, the Sun's atmosphere contains atoms of common elements like helium, oxygen and magnesium. In the high temperature conditions of the Sun's atmosphere, these atoms emit light at different wavelengths depending on the temperature of the gas containing them. Therefore by tuning into different wavelngths we can make images of material which is at different temperatures. This capability is illustrated in the picture...
Topics: What -- Sun, What -- Earth, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/cds015.html
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23
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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SOHO is keeping a close eye on a good-sized active region that is rotating into view. The video clip covers 36 hours (June 27-28, 2007) as the bright glow and arcs above the solar surface appear before we can actually see a sunspot on the surface of the Sun. The images were taken in extreme ultraviolet light at the 195 Angstrom wavelength. There have not been very many sunspots over the past year or so, so this one is generating some interest among solar observers. The sunspot that preceded it...
Topics: What -- SOHO, What -- Sun
Source: http://sohowww.nascom.nasa.gov/pickoftheweek/old/29jun2007/
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29
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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SOHO/SWAN Ultraviolet Image of Comet Hale-Bopp Approaching the Sun A time series of 6 images of comet Hale-Bopp taken by the SWAN instrument on board SOHO in the ultraviolet light (110-180 nm), on January 4, February 2 and 18, March 4 and 16, and April 3, 1997, as the comet slowly approaches the Sun, and increases in brightness. Hale-Bopp is clearly visible because of its huge hydrogen cloud produced by photo-dissociation of water vapor molecules evaporated from the solid nucleus. This nucleus...
Topics: What -- Sun, What -- SOHO, Where -- Finland
Source: http://sohowww.nascom.nasa.gov/gallery/Particle/swa008.html
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23
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 23
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LASCO C2 image taken at 23:01 hours UT on 21 Aug 96. In this picture of the normal K-corona (or electron corona, seen by the eye at eclipses), we see bright streamers on the east (left) limb, which are extensions of the faint, streamlike features seen in the C1 images. On the west (right) limb, the equatorial 'streamer,' quite usual at this time in the sunspot cycle, has brightened suddenly, with outwardgushing plasma, while above the horizontal streamer, a twisted mass of ionized gas, expelled...
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/las007.html
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26
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 26
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MDI 45 Image Average Dopplergram Minus Polynominal Fit Subtracting the average solar rotation signal from a 45 image average of full disk dopplergrams enhances the surface motions associated with solar convection. Convective flow transports material and energy from the Sun's interior along narrow plumes. At the surface, the upwelling material then spreads out horizontally in the granulation pattern seen in this image. Little of this pattern is seen at the center of the solar disk because the...
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/Helioseismology/mdi003.html
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26
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 26
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A SOHO-EIT image showing a huge eruptive prominence in the resonance line of singly ionized helium (He II) at 304 Angstroms in the extreme ultraviolet. While the filament was active at least nine hours before this exposure, the eruption started less than three hours before this image was obtained (1997 August 26 at 16:07 UT). The material in the eruptive prominence is at temperatures of 60,000 - 80,000 K, much cooler than surrounding corona, which is typically at temperatures above 1 million K....
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/eit023.html
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24
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 24
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Comet Hale-Bopp observed by SOHO/SWAN on April 3, 1997. False color image of the sky (in ecliptic coordinates) in the 110-180 nm spectral range made by the SWAN instrument on-board SOHO on April 3, 1997. The SWAN instrument observes the solar UV light which is back scattered by neutral hydrogen in the interplanetary medium. Comet Hale-Bopp is clearly visible because of its huge hydrogen cloud produced by photo-dissociation of water vapor molecules evaporated from the solid nucleus. This nucleus...
Topics: What -- SOHO, Where -- Finland
Source: http://sohowww.nascom.nasa.gov/gallery/Particle/swa007.html
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24
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 24
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EIT 304Å image of a huge, handle-shaped prominence taken on Sept. 14, 1999 -- Prominences are huge clouds of relatively cool dense plasma suspended in the Sun's hot, thin corona. At times, they can erupt, escaping the Sun's atmosphere. Emission in this spectral line shows the upper chromosphere at a temperature of about 60,000 degrees K. Every feature in the image traces magnetic field structure. The hottest areas appear almost white, while the darker red areas indicate cooler temperatures.
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/superprom.html
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31
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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The images were derived from full disk scans by CDS on 23 April 1998. As the temperature increases, the radiation comes from higher layers of the solar atmosphere, or corona, and is more strongly associated with solar activity. At the very highest temperatures, only the hot loops above active regions are visible. Scientists use images like these to probe the temperature structure of the solar atmosphere.
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/cds023.html
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24
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 24
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An extensive erupting prominence taken on 15 May, 2001 -- Prominences are huge clouds of relatively cool dense plasma suspended Joseph B. Gurman Normal Joseph B. Gurman 1 0 2001-06-13T15:55:00Z 2001-06-13T15:55:00Z 1 61 353 NASA GSGC 2 1 433 9.2511 800x600 0 0 An extensive erupting prominence taken on 15 May, 2001 -- Prominences are huge clouds of relatively cool dense plasma suspended in the Sun's hot, thin corona. At times, they can erupt, escaping the Sun's atmosphere. Emission in this...
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/cropplume.html
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22
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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A comparison of three images over four years apart illustrates how the level of solar activity has risen from near minimum to near maximum in the Sun's 11-years solar cycle. These images are captured using He II 304 ? emissions showing the solar corona at a temperature of about 60,000 degrees K. Many more sunspots, solar flares, and coronal mass ejections occur during the solar maximum. The increase in activity can be seen in the number of white areas, i.e., indicators of strong magnetic...
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/304time.html
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27
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 27
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Joseph B. Gurman Normal Joseph B. Gurman 1 2001-02-05T16:41:00Z 2001-02-05T16:43:00Z 1 45 259 NASA GSGC 2 1 318 9.2511 800x600 0 0 One hour of a coronal mass ejection on Feb. 26-27, 2000 taken by EIT 195_Ö. A CME blasts into space a billion tons of particles travelling millions of miles an hour.¬¨Ä This particular¬¨Ä CME led to the "lightbulb- shaped" images seen by LASCO's C2 and C3 instruments on Feb. 27th and featured on our "Hot Shots" page.
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/eit004.html
107
107
Oct 29, 2009
10/09
by
NASA/Goddard Space Flight Center Scientific Visualization Studio
movies
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This version projects the solar image on a sphere for improved perspective. Note: SOHO-MDI views the Sun from March 1 to May 31, 2001. Animator: Tom Bridgman (GST). Scientist: Neal Hurlburt (LMSAL), Junwei Zhao (Stanford University), Alexander G. Kosovichev (Stanford University), Thomas L. Duvall Jr. (NASA/GSFC), Phil Sherrer (Stanford University), A. M. Rucklidge (University of Cambridge). Platforms/Sensors/Data Sets: SOHO/Michelson Doppler Interferometer (MDI)/Continuum.
Topics: Solar Rotation, Space science, Sun, Earth Science, Sun-earth Interactions, Solar Activity,...
Source: http://svs.gsfc.nasa.gov/goto?2244
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42
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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An unprecedented chart shows the true direction and apparent speed of a breeze of atoms, mainly hydrogen, that comes from the stars and blows right through the Solar System. In the solar spacecraft SOHO, built by the European Space Agency, the SWAN instrument detects a characteristic ultraviolet glow filling the sky, coming from the hydrogen atoms. Small shifts in the ultraviolet wavelength reveal the speed of the breeze. On a map of the whole sky, the windspeed is shown in relation to the...
Topics: What -- Sun, What -- Constellation, What -- Earth, What -- SOHO, Where -- Paris, Where -- Helsinki
Source: http://sohowww.nascom.nasa.gov/gallery/Particle/swa010.html
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23
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 23
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The Sun's outer atmosphere as it appears in ultraviolet light emitted by electrically charged oxygen flowing away from the Sun to form the solar wind (region outside black circle), and the disk of the Sun in light emitted by electrically charged iron at temperatures near two million degrees Celsius (region inside circle). This composite image taken by two instruments (UVCS, outer region and EIT, inner region) aboard the SOHO spacecraft shows dark areas called coronal holes at the poles and...
Topics: What -- Sun, What -- SOHO, What -- TRACE
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/uvc003.html
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24
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 24
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A long whip-like eruptive prominence is captured in this EIT 304Ôø_ image on 30 July 2002. Although one end of the prominence is still attached to the Sun, it probably broke away soon after the image was taken--it was gone in the next image 6 hours later. Prominences are huge clouds of relatively cool dense plasma suspended in the Sun's hot, thin corona. At times, they can erupt, escaping the Sun's atmosphere. Emission in this spectral line shows the upper chromosphere at a temperature of...
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/whip304.html
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29
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 29
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SOHO-EIT image in resonance lines of eight and nine times ionized iron (Fe IX/X) at 171 Angstroms in the extreme ultraviolet showing the solar corona at a temperature of about 1 million K. This image was recorded on 11 September 1997. It is dominated by two large active region systems, composed of numerous magnetic loops.
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/eit028.html
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25
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 25
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EIT 304Å image captures an elongated erupting prominence -- Prominences are huge clouds of relatively cool dense plasma suspend Joseph B. Gurman Normal Joseph B. Gurman 1 1 2001-06-13T15:57:00Z 2001-06-13T15:58:00Z 1 64 367 NASA GSGC 3 1 450 9.2511 800x600 0 0 EIT 304_Ö image captures an elongated erupting prominence -- Prominences are huge clouds of relatively cool dense plasma suspended in the Sun's hot, thin corona. At times, they can erupt, escaping the Sun's atmosphere. Emission in this...
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/long304.html
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25
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 25
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An interesting coronal mass ejection (CME) blasted into space on March 5, 2007 as observed by the LASCO C2 instrument. The CME was not particularly large, but its core held its central shape together like a static object. As the bulbous front end of the CME emerged from behind the occulting disk, it carved out a dark area, which we usually see as a brighter edge. Then as the darker mass moved away from the Sun, the second half of the teardrop-shaped cloud appeared as whiter, suggesting a...
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/pickoftheweek/old/09mar2007/
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26
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 26
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Twisting prominence. An EIT 304Å image of a large, twirling prominence taken on Jan. 18, 2000. Prominences are huge clouds of relatively cool dense plasma suspended in the Sun's hot, thin corona. At times, they can erupt, escaping the Sun's atmosphere.
Topic: What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/eit001.html
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Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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This is one of the clearest and most engaging clips of solar plasma shimmying and arcing above the edge of the Sun that we have ever been able to view (May 9-10, 2007). With STEREO's high frame rate (an image every few minutes) and high resolution, we can zoom in on areas of interest yet maintain image clarity. This large sunspot was just rotating to the edge of the Sun when we zoomed in on its action for about 18 hours. The active region, a hot bed of intense magnetic forces, is the source of...
Topics: What -- Sun, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/pickoftheweek/old/18may2007/
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384
Nov 18, 2009
11/09
by
NASA/Goddard Space Flight Center Conceptual Image Lab
movies
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Like fans doing the wave at a stadium, large cell-like features called supergranules are moving in a vertical motion, giving the illusion of the solar surface rotating faster than the Sun. Note: The sun surface in motion. Large cell-like features on the Sun called supergranules are seen as white stripes. Animator: Walt Feimer (HTSI). Platforms/Sensors/Data Sets: SOHO.
Topics: Sun, Earth Science, Sun-earth Interactions, Solar Activity, Solar Imagery, Solar Granulation, What...
Source: http://svs.gsfc.nasa.gov/goto?10079
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32
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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Radial and latitudinal variations of the sound speed in the Sun as derived from MDI measurements. Red = hotter regions than in standard model, blue = cooler regions. Concentric layers in a cutaway image show oddities in the speed of sound in the deep interior of the Sun, as gauged by two instruments. MDI measures vertical motions due to sound waves reverberating through the Sun, at a million points on the visible surface. VIRGO detects the solar oscillations by rhythmic variations in the Sun's...
Topics: What -- Sun, What -- Virgo, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/mdi025.html
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26
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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eye 26
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he inner corona as seen by the LASCO C1 coronagraph in the light of the green forbidden coronal line of Fe XIV.Coronal structures can be seen as far as 1 million km above the solar surface.The large-scale solar magnetic field is being traced by loop systems,which are forming all around the Sun in different latitude zones, as demonstrated by the appearance of the corona above both the east and the west limbs. Three loop systems can be seen from high northern to high southern latitudes,bridging...
Topics: What -- Sun, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/las002.html
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25
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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The Sun in C IV 1548 A as observed by SUMER on 4-5 February 1996. The picture was put together from eight horizontal raster scans across the Sun, altogether 7406 exposures, each lasting 15 seconds. The picture is shown in bins of 4x4 pixels, one pixel being approx. 1 arcsec.
Topics: What -- Sun, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/sum007.html
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Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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The Sun observed by SUMER on 2-4 March 1996 in the emission line of He I at 584.3 A, formed in the upper chromosphere at about 20,000 K. The picture was put together from eight horizontal raster scans in alternating directions, starting in the solar NE. Each raster scan includes 1600 exposures, lasting 7 seconds each. The picture is shown in bins of 4x4 pixels, one pixel being approx. 1 arcsec. The brightest pixels correspond to an intensity of more than 70 counts/line/arcsec (with a maximum of...
Topics: What -- Sun, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/sum005.html
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Oct 30, 2009
10/09
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Courtesy of SOHO/LASCO, SOHO/EIT, and SOHO/MDI consortium. SOHO is a project of international cooperation between ESA and NASA.
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At 10:40 UTC on September 24, 2001, a large solar flare erupted from the surface of the sun. Pointed almost directly towards the Earth, the flare caused a coronal mass ejection (CME). Coronal mass ejections are composed of fast-moving clouds of ionized gas. These energetic particles can interfere with wireless communications, damage satellites, disrupt the transmission of electricity, and energize the Earth’s upper atmosphere, causing auroras.The images above show several views of the solar...
Topics: What -- Sun, What -- Earth, What -- FAST, What -- SOHO, What -- Extreme Ultraviolet Imaging...
Source: http://visibleearth.nasa.gov/view_rec.php?id=2132
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Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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A close up view of the top of the Sun as seen in profile shows thousands of little spurts, like small blow torches, shooting out all over the Sun. The movie shows just an average day's worth of this kind of activity as seen from the STEREO spacecraft (Ahead) in extreme ultraviolet light (August 3, 2007). These spurts are called spicules. With STEREO's 2048àö__2048 image resolution and an image every 10 minutes, we can zoom in on features like this with no distortion. Spicules are plasma jets...
Topics: What -- Sun, What -- STEREO, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/pickoftheweek/old/09aug2007/
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20
Aug 28, 2009
08/09
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NASA/Solar & Heliospheric Observatory
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Many people ask if we are at solar minimum yet and how do we know when we are. Solar minimum is the period when the Sun has reached its lowest point of solar activity in its 11-year cycle. One way to see if we are there yet is to observe the solar corona, easily seen in SOHO's C2 coronograph images. The structure we see in the coronagraph images is a marker for the global magnetic field extending into the corona and heliosphere. When the Sun is at its minimum and the corona is...
Topics: What -- Sun, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/pickoftheweek/old/05oct2007/
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35
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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SOURCES OF THE SOLAR WIND? --- "Plumes" of outward flowing, hot gas in the Sun's atmosphere may be one source of the solar "wind" of charged particles. These images, taken March 7, 1996, by the Solar and Heliospheric Observatory (SOHO), show (top) magnetic fields on the sun's surface near the south solar pole; (middle) an ultraviolet image of the 1 million degree plumes from the same region; and (bottom) an ultraviolet image of the "quiet" solar atmosphere closer...
Topics: What -- Extreme Ultraviolet Imaging Telescope, What -- Opportunity, What -- Polar, What -- SOHO,...
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/eit017.html
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23
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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LASCO C2 coronograph image in which a twisting, helical-shaped CME spins off from the Sun. This particular CME and erupting prominence is somewhat unusual in that the width of the blast is relatively narrow and the strands of plasma are twisting. The dark disk blocks the Sun so that the LASCO instrument can observe the structures of the corona in visible light. The white circle represents the size and position of the Sun.
Topics: What -- Sun, What -- Visible Light, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/c2helix.html
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23
Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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LASCO C2/C3 composite image series showing a CME cloud emerging from the Sun and an ensuing proton blast that struck the SOHO instrument on 5 November 1998. Protons accelerated to 10% the speed of light arrived at SOHO in about an hour, causing numerous bright points and streaks in the last two images.
Topics: What -- Sun, What -- SOHO
Source: http://sohowww.nascom.nasa.gov/gallery/images/c2c3protons.html
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Aug 28, 2009
08/09
by
NASA/Solar & Heliospheric Observatory
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SOURCES OF THE SOLAR WIND? --- "Plumes" of outward flowing, hot gas in the Sun's atmosphere may be one source of the solar "wind" of charged particles. These images, taken May 8, 1996, by the Extreme-ultraviolet Imaging Telescope (EIT) on board SOHO show ultraviolet images of polar plumes near the sout solar pole at about 1.5 million degrees Celsius in the Fe XII emission line at 195 A (top) and at somewhat cooler temperature at about 1 million degrees in the Fe IX/X...
Topics: What -- Extreme Ultraviolet Imaging Telescope, What -- SOHO, What -- Polar, What -- Opportunity
Source: http://sohowww.nascom.nasa.gov/gallery/SolarCorona/eit014.html
