Solar and Heliospheric Observatory

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The Pleiades star cluster (also known as the Seven Sisters and Messier 45) and Venus are gliding behind the Sun and moving towards each other in a conjunction or visual meeting...

Over a period of almost two days (May 9-10, 2008) numerous prominences andextensions danced above the Sun's edge as seen in...

SOHO's EIT telescope observed a wave streak across part of the solar surface when a(moderate) flare erupted on...

This STEREO image and video clip of the Sun in extreme ultraviolet light (April 18-19, 2008) showcase a group of active regions near the Sun's left edge over about 40 hours...

Data from SOHO's VIRGO instrument show clearly that powerful starquakesripple around the Sun...

This movie shows an exceptionally large prominence eruption on the Sun onApril 9, 2008, as seen from the STEREO Ahead spacecraft. Just above the solar surface, therelatively cool prominence...

A close-up of the Sun from the STEREO (Ahead) spacecraft showing a pair of active regions (that appear as brighterregions) with some interesting activity over a two-day period...

On March 25, 2008 STEREO observed its first M-class (medium-sized) solar flare, which was alsoassociated with a coronal mass ejection. Flares are intense...

The STEREO (Ahead) spacecraft was watching in extreme UV light (March 15,2008) as a small active region emerged from beneath the Sun's surface...

SOHO has spotted an expansive coronal that has apparently returned for a repeatperformance right on schedule. This darker area has just crossed thecenterline of the Sun and will be streaming solar wind towards Earth...

Just in case our web visitors did not realize it, almost every SOHO image is nowavailableonline, all the way back to 1996...

Using two STEREO instruments that view the Sun in extreme UV light, we can combineframes taken at about the same time and see features from both. The focus of interest here is an activeregion coming around the edge...

Sun|trek is an exciting new website for school students and teachers about the Sun andits effect on the Earth. Sun|trek has been motivated and inspired by the fantastic images and movies of the Sun...

This graphic suggests how we can take a closer look at the image sizes that can beobtained by three major solar missions, from SOHO to STEREO, and then to SDO (Solar Dynamics Observatory).We can begin to understand the substantial increase...

A substantial coronal hole can be seen (below center and extending to the right) in this image by STEREO. Coronal holes appear as darker areas when viewed in this extreme...

On Jan. 30, 2008 STEREO observed two different kinds of spin-offs from the Sun, called eruptiveprominences, over a period of several hours. The first one is harder...

The Sun blew out a coronal mass ejection (CME) thatresembled an almost perfectly shaped smoke ring...

Beginning late on January 16 2008 the asteroid Vesta appeared in theSTEREO SECCHI COR2-A ("Ahead" spacecraft) images. Although a fairly small, whitish dot, itcan be picked...

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...

Which magnetic polarity leads and which follows in solar active regions alternates with each, roughly 11.1 year solar activity cycle...

As 2007 ended and 2008 began, the Sun blasted out two coronal massejections (CMEs) on Dec. 31, 2007 and Jan. 2, 2008, perhaps in celebration of the NewYear. At any rate, over the span of 3 days, two separate CMEs blew out...

As we approach the end of another year of solar observing, it might be worth noting the record of SOHO'slongevity. We can compare solar images from the same instrumenttaken the same day, but 11 years apart...

SOHO has observed what may be the first indication of a "reversed" magneticpolarity region when compared to the current solar cycle, something scientists consider to be acrucial indicator that......

Many SOHO fans keep have been asking for hi-resolution movies of the 2004 Halloween storms...

The museum houses two floors of hands-on science exhibits highlightingphysical and natural history and includes 110 acres of trails and...