STEREO | What's New

April 17, 2021, was a day like any other day on the Sun, until a brilliant flash erupted and an enormous cloud of solar material billowed away from our star. Such outbursts from the Sun are not u...

https://science.nasa.gov/science-research/heliophysics/multiple-spacecraft-tell-the-story-of-one-giant-solar-storm/

The recently discovered Comet Nishimura, which has been getting a lot of attention lately, is now visible in STEREO's inner Heliospheric Imager (HI-1) field-of-view. The comet first appeared in t...

https://www.space.com/comet-nishimura-photobombs-sun-spacecraft

When the STEREO mission was first launched in 2006, with the Ahead and Behind spacecraft each put into their own orbits about the Sun, they soon reached a point where the views from the two space...

https://stereo.gsfc.nasa.gov/gallery/3dimages.shtml

After 17 years, the STEREO Ahead spacecraft is passing close to Earth again, with closest approach on August 17. As it passes by, the spacecraft has to rotate to keep the high gain antenna pointe...

https://spaceweather.com/archive.php?day=15&month=08&year=2023&view=view

On Aug. 12, 2023, NASA's STEREO-A spacecraft will pass between the Sun and Earth, marking the first Earth flyby of the nearly 17-year-old mission. The visit home brings a special chance for the s...

http://www.nasa.gov/feature/goddard/2023/sun/after-seventeen-years-a-spacecraft-makes-its-first-visit-home

On July 24, 2023, the SECCHI COR2 telescope aboard the STEREO-A spacecraft observed a large coronal mass ejection that completely surrounded the Sun. Such events are know as "halo" CMEs. CMEs app...

https://stereo.gsfc.nasa.gov/~thompson/cor2_halo_20270724.html

After leaving Earth to fly around the Sun 17 years ago, the STEREO Ahead spacecraft has come back around and will fly by Earth this summer, with closest approach on August 17th. STEREO Ahead is s...

https://skyriddles.wordpress.com/2023/07/03/stereo-a-comes-home/

The STEREO-A spacecraft played an important role in a recent study using data from the Hubble Space Telescope and other observatories that showed that the star Betelgeuse ejected a substantial pa...

https://www.nasa.gov/feature/goddard/2022/hubble-sees-red-supergiant-star-betelgeuse-slowly-recovering-after-blowing-its-top

STEREO observed a large CME on 2022-02-15 thru 2022-02-16.

https://stereo.gsfc.nasa.gov/news/cme_20220215_cor2.html

Over the past couple of days, speculation has grown among astronomers that comet Leonard may be undergoing "outbursts" - rapid changes in brightness corresponding to large and abrupt releases of ...

https://stereo.gsfc.nasa.gov/news/cometleonard.shtml

The Sun is waking up from the solar minimum and starting to produce coronal mass ejections (CMEs) and flares in greater numbers. Here STEREO images a spectacular CME that blasted off a few days a...

https://stereo.gsfc.nasa.gov/news/newsolarcycle.shtml

Starting on June 11 thru June 14, 2021, the building which houses the STEREO data and web servers will undergo critical infrastructure maintenance. This will require the STEREO servers to go offl...

https://stereo.gsfc.nasa.gov/news.xml

Though they focus on the star at the center of our solar system, three of NASA's Sun-watching spacecraft have captured unique views of the planets throughout the last several months.

https://www.nasa.gov/feature/goddard/2021/unique-solar-system-views-from-nasa-sun-studying-missions

For several weeks in summer 2020, NASA's Solar and Terrestrial Relations Observatory, or STEREO, had the solar system's best view of the star Betelgeuse, whose extreme dimming over the past sever...

https://www.nasa.gov/feature/goddard/2020/nasa-satellite-s-lone-view-of-betelgeuse-reveals-more-strange-behavior

A broad observing campaign has allowed scientists to assemble a wide array of data to study the Sun and solar wind during Parker Solar Probe's 4th pass close to the Sun.

https://www.nasa.gov/feature/goddard/2020/nasa-parker-solar-probe-teams-up-with-observatories-around-solar-system-for-4th-solar-encounter

NASA's Solar Terrestrial Relations Observatory, or STEREO-A spacecraft, captured these images of comet ATLAS as it swooped by the Sun from May 25 - June 1. During the observations and outside STE...

https://www.nasa.gov/image-feature/goddard/2020/stereo-watches-comet-atlas-as-solar-orbiter-crosses-its-tail

Notice to cURL and wget users

https://stereo.gsfc.nasa.gov/curl.shtml

Some people have noticed an odd shape, sort of a cross inside a circle entering the field-of-view of the HI2 telescope on STEREO Ahead around February 20,2020. The answer lies on the exact opposi...

https://stereo.gsfc.nasa.gov/artifacts/wheel/

STEREO is proud to announce that two of its Principle Investigators, Drs. Toni Galvin of PLASTIC and Russ Howard of SECCHI have been selected as Fellows of the American Geophysical Union. A third...

https://eos.org/agu-news/2019-class-of-agu-fellows-announced

Citizen scientists have used STEREO/HI data to have discovered that complexity of solar storms tracks the solar cycle.

https://ras.ac.uk/news-and-press/news/citizen-scientists-discover-cyclical-pattern-complexity-solar-storms

STEREO data reveal an unexpected trail of dust in the orbit of Mercury

https://www.nasa.gov/feature/goddard/2019/what-scientists-found-after-sifting-through-dust-in-the-solar-system

STEREO data are contributing to a new understanding of comets and how they are affected by the Sun.

https://www.nasa.gov/feature/goddard/2018/new-insights-on-comet-tails-are-blowing-in-the-solar-wind

Scientists use special STEREO campaign data and state-of-the-art image processing to reveal the structure of the solar corona as it flows outward to become the solar wind.

https://www.nasa.gov/feature/goddard/2018/discovering-structure-in-the-outer-corona

The more solar observatories, the merrier: Scientists have developed new models to see how shocks associated with coronal mass ejections, or CMEs, propagate from the Sun - an effort made possible...

https://www.nasa.gov/feature/goddard/2018/3-nasa-satellites-recreate-solar-eruption-in-3-d

In April and July 2014, the Sun emitted three jets of energetic particles into space, that were quite exceptional: the particle flows contained such high amounts of iron and helium-3, a rare vari...

http://www.mps.mpg.de/Magnetic-coil-springs-accelerate-particles-on-the-Sun

The outer part of the Sun's atmosphere, the corona, looks pretty smooth, but new deep exposures of the outer corona reveal complex structures. This should make for some interesting observations f...

https://www.sciencenews.org/article/sun-corona-outer-atmosphere-complex

Sun-gazing missions SOHO and STEREO watched the return of comet 96P/Machholz when it entered their fields of view between Oct. 25-30. It is extremely rare for comets to be seen simultaneously fro...

https://www.nasa.gov/feature/goddard/2017/return-of-the-comet-96p-spotted-by-esa-nasa-satellites

Want to help solar scientists use STEREO data to better understand Coronal Mass Ejections? You can do that, with no previous experience required. The Solar Stormwatch Project is looking for volun...

https://www.zooniverse.org/projects/shannon-/solar-stormwatch-ii

The STEREO and SOHO Teams are gearing up for a planned visit by one of our favorite celestial wanderers! The comet 96P/Machholz should be in the STEREO field of view October 26-28. SOHO will be ...

https://sohowww.nascom.nasa.gov/pickoftheweek/old/20oct2017/

STEREO and SDO observations of the solar poles reveal large scale waves that could help us predict the locations of future solar active regions.

https://www.nasa.gov/feature/goddard/2017/waves-on-sun-give-nasa-new-insight-into-space-weather-forecasting

An international science team says NASA's Fermi Gamma-ray Space Telescope has observed high-energy light from solar eruptions located on the far side of the sun, which should block direct light f...

https://www.nasa.gov/feature/goddard/2017/nasas-fermi-sees-gamma-rays-from-hidden-solar-flares

Join us for a series of presentations celebrating STEREO and efforts to predict space weather on the 10th anniversary of STEREO's launch, October 25, at 1:00 pm EDT. A panel of scientists includi...

https://airandspace.si.edu/events/sun-360-our-solar-system%E2%80%99s-space-weather-watchdog

Ever since the 1950s discovery of the solar wind - the constant flow of charged particles from the sun - there's been a stark disconnect between this outpouring and the sun itself. As it approach...

https://www.nasa.gov/feature/goddard/2016/images-from-sun-s-edge-reveal-origins-of-solar-wind

NASA has re-established contact with an errant spacecraft. In October 2006, the space agency sent twin satellites into orbit to study the Sun. The satellites follow Earth's orbit around the sun, ...

http://www.nytimes.com/2016/08/30/science/a-nasa-satellite-ends-the-silent-treatment.html?_r=0

On Aug. 21, 2016, contact was reestablished with one of NASA's Solar Terrestrial Relations Observatories, known as the STEREO-B spacecraft, after communications were lost on Oct. 1, 2014. Over 22...

https://www.nasa.gov/feature/goddard/2016/nasa-establishes-contact-with-stereo-mission

Solar flares are intense bursts of light from the sun. They are created when complicated magnetic fields suddenly and explosively rearrange themselves, converting magnetic energy into light throu...

https://www.nasa.gov/feature/goddard/2016/seeing-double-nasa-missions-measure-solar-flare-from-2-spots-in-space/

On Oct. 1, 2014, NASA lost communication with one of two STEREO missions spacecraft, just as the satellite was about to orbit around the other side of the sun. More than a year's worth of silence...

https://www.nasa.gov/feature/goddard/saving-nasas-stereo-b-the-189-million-mile-road-to-recovery

On Nov. 9, 2015, NASAÕs Solar and Terrestrial Relations Observatory Ahead, or STEREO-A, once again began transmitting data at its full rate. For the previous year, STEREO-A was transmitting only...

https://www.nasa.gov/feature/goddard/nasa-s-stereo-a-resumes-normal-operations

Much like the flapping of a windsock displays the quick changes in wind's speed and direction, called turbulence, comet tails can be used as probes of the solar wind - the constant flowing stream...

https://www.nasa.gov/feature/goddard/comet-encke-a-solar-windsock-observed-by-nasa-s-stereo

Two teams of researchers led by Nariaki Nitta from the Lockheed Martin Advanced Technology Center in the USA and by Radoslav Buck from the Max Planck Institute for Solar System Research (MPS) in ...

http://www.mps.mpg.de/4150791/PM_2015_10_13_Riesige_Wellen_in_der_Sonnenatmosphaere

On July 11, 2015 we received our first images in over three months from NASA's Solar TErrestrial RElations Observatory Ahead spacecraft, or STEREO-A. Since March 24, 2015, STEREO-A has been on th...

https://www.nasa.gov/feature/goddard/stereo/return-of-the-stereo-a-spacecraft

STEREO-A is now on the other side of the Sun, over 290 million km (180 million miles) away (See Where is STEREO? ). Recently, a new planet has appeared in the field of view of it sun-pointed ins...

http://secchi.nrl.navy.mil/movies/cor2a_20150128.mov

The IMPACT, PLASTIC, and SECCHI instruments on STEREO Ahead were turned off at 16:00 UT on Friday, 20 March 2015 in preparation for superior solar conjunction. On Tuesday, 24 March, also at 16:00...

http://secchi.nrl.navy.mil/movies/cor2a_20150128.mov

Communications with the STEREO Behind spacecraft were interrupted on October 1, 2014 immediately after a planned reset of the spacecraft performed as part of a test of solar conjunction operation...

https://stereo-ssc.nascom.nasa.gov/behind_status.shtml

Understanding the sun from afar isn't easy. How do you figure out what powers solar flares - the intense bursts of radiation coming from the release of magnetic energy associated with sunspots Ð...

https://www.nasa.gov/content/goddard/messenger-stereo-measurements-open-new-window-into-high-energy-processes-on-the-sun/

Since February 2011, the two spacecraft of NASA's STEREO mission have been providing scientists with unprecedented views of the far side of the sun. Placed in orbits that allow their perspective ...

https://www.nasa.gov/content/goddard/stereo-entering-new-stage-of-operations/

Time and again, the sun hurls energetic charged particles into space in violent eruptions. At the same time, a continuous stream of particles, the solar wind, escapes from its surface. Numerous s...

http://www.mps.mpg.de/3530701/PM_2014_05_14_Panoramic_view_of_the_Sun_s_particles

Surrounding the sun is a vast atmosphere of solar particles, through which magnetic fields swarm, solar flares erupt, and gigantic columns of material rise, fall and jostle each other around. Now...

https://www.nasa.gov/content/goddard/nasas-stereo-maps-much-larger-solar-atmosphere-than-previously-observed/

On July 22, 2012, a massive cloud of solar material erupted off the sun's right side, zooming out into space and passing one of NASA's two Solar Terrestrial Observatory (STEREO) spacecraft along ...

https://stereo.gsfc.nasa.gov/news/perfectstorm.shtml

The MAVEN mission is headed for Mars and will be partnering with STEREO on the way. The MAVEN mission includes solar wind sensors which combined with those of STEREO will provide another vantage...

https://stereo-ssc.nascom.nasa.gov/cgi-bin/make_where_gif

Four comets are now visible using STEREO-A's HI2, although you'll have to look very closely to see them all.

https://stereo.gsfc.nasa.gov/news/FourComets.shtml

Astronomers are eagerly awaiting the arrival of Comet ISON, which will pass within just 2.7 solar radii from Sun center on November 28, 2013 (U.S. Thanksgiving). Although comets are unpredictable...

https://stereo-ssc.nascom.nasa.gov/comet_ison/

The STEREO Behind spacecraft has now moved far enough in its orbit for Earth to enter the HI1-B field-of-view. Earth has been visible in the HI2 telescopes since launch, but this is the first tim...

https://stereo.gsfc.nasa.gov/gallery/item.php?id=stereoimages&iid=197

On July 23, 2012, a massive cloud of solar material erupted off the sun's right side, zooming out into space, passing one of NASA's STEREO spacecraft along the way. Using the STEREO data, scienti...

https://www.nasa.gov/mission_pages/stereo/news/fast-cme.html

A massive sunspot region facing Earth - known as 1520 - has unleashed a large solar flare. NOAAÕs Space Weather Prediction Center says the flare is rated an X1.4. This type of flare is considere...

http://www.washingtonpost.com/blogs/capital-weather-gang/post/giant-sunspot-shoots-out-intense-x-class-solar-flare/2012/07/12/gJQAKpDtfW_blog.html

One day in the fall of 2011, Neil Sheeley, a solar scientist at the Naval Research Laboratory in Washington, D.C., did what he always does Ð look through the daily images of the sun from NASA's ...

https://www.nasa.gov/mission_pages/sunearth/news/solar-plumes.html

NOVA SAGITTARII 2012 = PNV J17452791-2305213, becomes apparent in STEREO HI1B imager across 20120420-23.

http://cometal-comets.blogspot.com/2012/04/stereo-b-sees-nova-sagittarii-2012.html

Twin Solar Spacecraft Take First Complete Image of Far Side of Sun

https://www.nasa.gov/news/11_YIR_poll.html

Some people have noticed a strange triangular or diamond-shape "object" entering the field-of-view of the HI2 telescope on STEREO Behind around December 26, 2011. You can see the feature in quest...

https://stereo.gsfc.nasa.gov/artifacts/triangle/

The two STEREO spacecraft now sit on opposite sides of the sun providing a view of the latest solar activity for the entire solar system.

https://www.nasa.gov/mission_pages/sunearth/news/News110411-x1.9-cme.html

On October 25, 2006 a Delta II rocket launched from Cape Canaveral carrying two nearly identical spacecraft. Each satellite was one half of a mission entitled Solar TErrestrial RElations Observat...

https://www.nasa.gov/mission_pages/stereo/news/five-years.html

For the first time, a spacecraft far from Earth has turned and watched a solar storm engulf our planet. The movie, released today during a NASA press conference, has galvanized solar physicists, ...

https://www.nasa.gov/mission_pages/stereo/news/solarstorm-tracking.html

Combined data from the STEREO and ACE spacecraft are being used to study the structure of a CME in unprecedented detail, showing considerable evolution in the CME's internal structure as it moves...

http://www.ras.org.uk/news-and-press/217-news2011/1953-nam-12-scientists-see-solar-outburst-in-exquisite-detail

Researchers have discovered 122 new eclipsing binary stars and observed hundreds more variable stars in an innovative survey using NASA's two STEREO solar satellites.

https://stereo.gsfc.nasa.gov/news/VariableStars.shtml

On February 6, 2011, NASA released the first ever images of the entire Sun , using a combination of STEREO images together with data from the Solar Dynamics Observatory. This never before seen vi...

https://www.nasa.gov/mission_pages/stereo/news/entire-sun.html

For the past 4 years, the two STEREO spacecraft have been moving away from the Earth and gaining a more complete picture of the sun. On February 6, 2011, NASA will reveal the first ever images of...

http://www.youtube.com/watch?v=Z9ITDs-n7gQ

For the first time scientists have used data analysed by the public to make a real-time prediction of a solar storm that should reach Earth on Monday 13 December, thanks to the Solar Stormwatch w...

http://www.nmm.ac.uk/about/press/public-spot-significant-solar-storm

Illustration of the positions of the two STEREO spacecraft show that they attain 180 degrees of separation in Feb. 2011, thus allowing the world to see the entire Sun for the first time.

https://stereo.gsfc.nasa.gov/gallery/item.php?id=sciencevisuals&iid=12

Scientists from Boston University's Center for Space Physics (CSP) reported the presence of a comet-like tail in images of the planet Mercury taken by STEREO, in a presentation given September 22...

https://stereo.gsfc.nasa.gov/news/MercurysTail.shtml

Solar researchers have used a novel set of techniques using STEREO data that allow them to watch the acceleration and deflection of coronal mass ejections with unprecedented precision.

http://www.thesuntoday.org/?p=338

On August 1st around 0855 UT, Earth orbiting satellites detected a C3-class solar flare. The origin of the blast was Earth-facing sunspot 1092. C-class solar flares are small (when compared to X ...

https://www.nasa.gov/topics/solarsystem/sunearthsystem/main/News080210-cme.html

When a coronal mass ejection (CME) erupts from the Sun, movies in extreme ultraviolet light often show enormous waves, spreading over a large area on the solar surface, just as tsunamis travel fa...

https://stereo.gsfc.nasa.gov/gallery/item.php?id=stereoimages&iid=127

NASA's new Solar Dynamics Observatory may be getting all the press this week for its retina-searing first pictures of the sun. But two old sun-observing warhorses recently showed they're not quit...

http://news.nationalgeographic.com/news/2010/04/100423-sun-eruption-nasa-space-science-solar-observatory/

Using instruments aboard NASA's twin STEREO spacecraft, four post-doctoral fellows at UC Berkeley's Space Sciences Laboratory were able to track the comet as it approached the Sun (Mar. 11-12, 20...

https://stereo.gsfc.nasa.gov/gallery/item.php?id=stereoimages&iid=125

Solar scientists need you! Help them spot explosions on the Sun and track them across space to Earth. Your work will give astronauts an early warning if dangerous solar radiation is headed their ...

http://solarstormwatch.com/

STEREO featured live and on-line in a new exhibition at the UK National Maritime Museum

http://www.nmm.ac.uk/visit/exhibitions/past/solar-story/

We have investigated, and determined that these are artifacts caused by an interaction between the high compression factors used for the beacon data, and cosmic ray events on the detector. Our ...

https://stereo.gsfc.nasa.gov/artifacts/artifacts.shtml

A new free application for iPhones lets you access up-to-date global views of the Sun from STEREO along with solar activity alerts and other features. With this application, you can interactively...

http://3dsun.org/

The twin STEREO spacecraft confirmed their reality in February 2009 when sunspot 11012 unexpectedly erupted. The blast hurled a billion-ton cloud of gas (a coronal mass ejection, or CME) into spa...

https://stereo.gsfc.nasa.gov/news/SolarTsunami.shtml

The twin STEREO spacecraft (called "Behind" and "Ahead" denoting their relative positions in space), now almost 120 degrees apart, captured this large and dramatic prominence eruption over about ...

https://www.nasa.gov/mission_pages/stereo/multimedia/filament_eruption.html

Nature has provided five huge rest stops far out in space for the convenience of spacecraft traveling from Earth. Some NASA folks call them "parking lots" in space. They're unusual locations wher...

http://www.mcclatchydc.com/homepage/story/71824.html

NASA.s Solar Terrestrial Relations Observatory (STEREO) spacecraft has spotted the first major activity of the new solar cycle. On May 5 STEREO-B observed a Type II radio burst and a bright, fast...

https://www.nasa.gov/mission_pages/stereo/news/solarcycle24.html

Regular viewers of SOHO and STEREO data are well familiar with the variety of strange artifacts we see in the satellites images sometimes. We see various strange blobs, reflections and streaks, a...

http://sungrazer.nrl.navy.mil/index.php?p=news_arch89#ghosts

Observations in 3-D from NASA's twin Solar Terrestrial Relations Observatory (STEREO) spacecraft have allowed scientists, for the first time, to reveal the true size and shape of solar explosions...

https://stereo.gsfc.nasa.gov/news/anatomy/anatomy.shtml

Two places on opposite sides of Earth may hold the secret to how the moon was born. NASA's twin Solar Terrestrial Relations Observatory (STEREO) spacecraft are about to enter these zones, known a...

https://www.nasa.gov/mission_pages/stereo/news/gravity_parking.html

NASA's twin STEREO probes are entering a mysterious region of space to look for remains of an ancient planet which once orbited the Sun not far from Earth. If they find anything, it could solve a...

http://science.nasa.gov/headlines/y2009/09apr_theia.htm?list20318

STEREO's 20th comet has been discovered... and it's a pretty exciting one! Comet C/2009 G1 (STEREO), also known as STEREO-20, was announced earlier today on MPEC 2009-G30. Discovered yesterday by...

http://sungrazer.nrl.navy.mil/index.php?p=latest_news

Two artists, Ruth Jarman and Joe Gerhardt of Semiconductor Films, have taken STEREO imagery and combined it with sound into a short film which impressed us, and we think you will enjoy. In their ...

http://www.semiconductorfilms.com/root/Black_Rain/Black_Rain.htm

STEREO/EPO News

http://www.100hoursofastronomy.org/program/75-live-24-hour-research-observatory-webcast

THEY are the places gravity forgot. Vast regions of space, millions of kilometres across, in which celestial forces conspire to cancel out gravity and so trap anything that falls into them. They ...

http://www.newscientist.com/article/mg20126962.000-do-gravity-holes-harbour-planetary-assassins.html?full=true

Today, NASA researchers announced an event that will transform our view of the Sun and, in the process, super-charge the field of solar physics for many years to come.

http://science.nasa.gov/headlines/y2009/23jan_darkside.htm?list20318

January 24, 2009 marks the point at which the two STEREO spacecraft reach 90 degrees separation, a condition known as quadrature. Since the two STEREO spacecraft went into orbit around the Sun at...

https://stereo.gsfc.nasa.gov/news/Quadrature.shtml

You would think that, after 13-years of historic comet discoveries with SOHO and two years of amazing STEREO/SECCHI observations and discoveries, we had put a check-mark in most of the boxes for ...

https://stereo.gsfc.nasa.gov/gallery/item.php?gid=1&id=85

Dec. 15, 2008: Solar flares are the most powerful explosions in the solar system. Packing a punch equal to a hundred million hydrogen bombs, they obliterate everything in their immediate vicinity...

http://science.nasa.gov/headlines/y2008/15dec_solarflaresurprise.htm

The two STEREO spacecraft (Ahead and Behind) continue to separate, by orbit design, so that they are 66 degrees apart from each other as of August 5, 2008. This allows them to see more and more o...

https://stereo.gsfc.nasa.gov/gallery/item.php?gid=stereoimages&id=76

STEREO has made possibly the first 3D measurements of a solar jet. Jets are columns of super hot plasma (hot ionized gases at over a million degrees) which shoot out from the sun over the course...

https://stereo.gsfc.nasa.gov/gallery/item.php?gid=1&id=66

The figure shows a sequence of three 195 A difference images obtained by the EUVI instrument on STEREO taken on May 19, 2007. The images show a tsunami blasting through the Sun's atmosphere at mi...

https://stereo.gsfc.nasa.gov/gallery/item.php?id=stereoimages&iid=58

At the largest scale, the Sun's corona (outermost atmosphere) consists of so-called streamers: huge, pointy cones of enhanced density. On a more basic level, everything in the corona is made up o...

http://www.skyandtelescope.com/news/16681321.html

Featuring amongs the installations, is the Heliosphere an installation by TCD astrophysics lecturer Dr Peter Gallagher and Anna Hill, which allows you see 3D close-up satellite footage of the sur...

http://www.tcd.ie/Communications/news.php?headerID=822&vs_date=2008-2-1

U physicists discover powerful radio waves that may lead to spacecraft damage. The culprit? The most powerful radio waves of their kind ever detected in the Belts. The researchers not only discov...

https://www.nasa.gov/mission_pages/stereo/news/killer_electrons.html

The two STEREO spacecraft have been slowly separating over most of the mission, so that now they are 44 degrees apart as of Jan. 8, 2008. They will continue to separate as the mission proceeds. S...

https://stereo.gsfc.nasa.gov/gallery/item.php?id=stereoimages&iid=53

Astronomers got a new perspective on the sun in April, when NASA's Solar Terrestrial Relations Observatory (STEREO) probes began sending back the first three-dimensional images of our nearest sta...

http://discovermagazine.com/2008/jan/twin-probes-watch-sun2019s-fury-in-3-d

STEREO's Heliospheric Imagers are ideally placed for observing stellar variability. The nature of the synoptic observations means that stars can be tracked continuously through the 2 cameras on b...

https://stereo.gsfc.nasa.gov/news/StellarVariability.shtml

Data from STEREO's SECCHI Heliospheric Imagers have been used to image gusts in the solar wind as they go by the Earth

https://stereo.gsfc.nasa.gov/news/SolarWindEarth.shtml

We've been getting a lot of questions lately asking what this small round object was that passed through the COR2-Ahead field of view from December 22nd to January 2nd. Hence, we decided to post ...

https://stereo.gsfc.nasa.gov/news/Planet_id.shtml

Questions with Answers from STEREO Team Members

https://stereo.gsfc.nasa.gov/videoQA/videoQA.shtml

This TV show, which prominently features STEREO will be premiering on the National Geographic Channel Oct. 30 at 9:00 ET: http://channel.nationalgeographic.com/channel/ET/daily/20071030.html It ...

http://channel.nationalgeographic.com/channel/nakedscience/videos_2.html

NASA's STEREO satellite captured the first images ever of a collision between a solar "hurricane", called a coronal mass ejection (CME), and a comet. The collision caused the complete detachmen...

https://www.nasa.gov/mission_pages/stereo/news/encke.html

On March 29, 2006, a NASA-led science expedition, including a number of STEREO team members, traveled to Tripoli and then the Sahara desert to witness and study -- first hand -- a total solar ecl...

https://www.nasa.gov/vision/earth/everydaylife/eclipse_libya.html

NASA's STEREO Mission, the scientists involved and the vital information that they gather and study, is being presented in a new digital 3D film titled "3D Sun." 3D Sun will bring these images...

http://www.3dsunfilm.com/

We invite you to send us your 3D photos so that we can feature them on our web site. The 3D effect is fun to see and we want to show off what our readers have come up with. The photos need to be ...

https://stereo.gsfc.nasa.gov/gallery/3dshowcase.shtml

Though we can't yet predict such storms, it's only a matter of time. Space-weather forecasters use satellites and ground-based scopes to monitor sunspots for flares and CMEs but can't tell with c...

http://www.cnn.com/2007/TECH/space/06/07/solar.storm.anatomy/index.html

The STEREO 3D Press Conference has received a large amount of media attention. Click here to view all the press clippings.

https://stereo.gsfc.nasa.gov/3drelease/3darticles.shtml

The two STEREO spacecraft were launched together in Oct. 2006 from Cape Canaveral. In the following months they were placed in two separate orbits about the Sun - one (the Ahead spacecraft) movin...

https://stereo.gsfc.nasa.gov/3drelease/3dultraviolet.shtml

On April 23, NASA will unveil 3-D images of the sun from NASA's Solar TErrestrial RElations Observatory (STEREO) on the web, television and museums across the country. For first time, scientists ...

https://stereo.gsfc.nasa.gov/3drelease/3drelease.shtml

On Feb. 25, 2007 there was a transit of the Moon across the face of the Sun - but it could not be seen from Earth. This sight was visible only from the STEREO-B spacecraft in its orbit about the ...

https://stereo.gsfc.nasa.gov/gallery/item.php?id=stereoimages&iid=8

NASA researchers will be discussing the remarkable imagery from the recently launched STEREO spacecraft. For the first time, scientists are now able to track solar storms from the sun to Earth us...

https://www.nasa.gov/mission_pages/stereo/news/panorama_media.html

Jan. 22, 2007 The "Behind" spacecraft leaves Earth orbit for its orbit about the sun. Now both spacecraft are in thier final sun-centric orbits.

https://stereo.gsfc.nasa.gov/img/spacecraft/STEREO_phasing.mov

An instrument on one of the two new STEREO spacecraft captured an unprecedented view of the brightest comet of the last 40 years.

https://stereo.gsfc.nasa.gov/gallery/item.php?id=stereoimages&iid=1

NASA's twin Solar Terrestrial Relations Observatories (STEREO) sent back their first images of the sun this week and with them a view into the sun's mounting activity.

https://www.nasa.gov/mission_pages/stereo/news/first_light.html

A Coronagraph is an instrument which studies the Sun's outer atmosphere, the corona. From Earth the corona is most easily seen during a total solar eclipse.

https://stereo.gsfc.nasa.gov/classroom/coronagraphs.shtml

It is not possible for the human eye to see ultraviolet light directly. Thus, the colors of these images are just ways to represent them so we can see them. To keep the images straight, we assign...

https://stereo.gsfc.nasa.gov/classroom/EUVsun.shtml

The twin STEREO (Solar TErrestrial RElations Observatory) spacecraft were launched Wednesday, October 25th, at 8:52 p.m. EDT on a Delta II 7925-10L rocket from Cape Canaveral Air Force Station in...

https://stereo.gsfc.nasa.gov/launch.shtml