19 July 2011, 03:34 PM ET
The twin Artemis probes will study the moon from orbit for the next seven to 10 years.
18 July 2011, 02:55 PM ET
Over a 2 hour period the Sun released a massive strand of plasma that split and twisted into what resembles a dragon before falling back to the surface. Captured by the Solar Dynamics Observatory on July 12, 2011.
14 July 2011, 01:03 PM ET
Here's a blow-by-blow of one of the most powerful solar storms in recent history.
13 July 2011, 12:38 PM ET
Eleven years ago this week, one of the worst storms on record raged on the sun.
26 June 2011, 12:49 AM ET
Choose your favorite space story from the last week.
24 June 2011, 01:53 PM ET
Skywatchers at high northern latitudes may see some supercharged auroras, NASA says.
24 June 2011, 01:10 PM ET
Plasma from solar flares or coronal mass ejections travel along solar wind to ultimately produce aurora's in Earth's polar regions. This visually stunning explanatory video takes you on a journey from Sun's interior to the Earth's upper atmosphere.
23 June 2011, 02:56 PM ET
In 2004, the NASA probe's parachute malfunctioned and it crash-landed in Utah. The probe was sent about 900,000 miles from Earth to collect bits of solar wind and return them for study - some samples were salvaged.
23 June 2011, 02:01 PM ET
Earth and the other rocky planets aren't made out of the solar system's original starting material.
22 June 2011, 06:40 PM ET
Researchers are working on ways to predict and track the next big solar eruption.
21 June 2011, 02:19 PM ET
A moderate solar flare ejected in the relative direction of our home planet on June 21, 2011. All indications are that it's not particularly strong but could set off polar geomagnetic storms when it reaches Earth on June 23rd.
20 June 2011, 05:44 PM ET
Tongues of 60,000 degree plasma flick out and curl back into the Sun in this 13 hour time-lapse movie of extreme ultra-violet light. Hot licks in the soundtrack provided by Atom Strange.
16 June 2011, 06:00 AM ET
Could a giant magnetic rope that produces strong electric current be the cause of solar storms?
15 June 2011, 03:02 PM ET
Solar physicists have a keen interest in studying changes in the sun's activity.
14 June 2011, 04:19 PM ET
Solar activity dropped dramatically in 2008, and this historic lull caused a similar decrease in magnetic effects on Earth — with an eight-month lag.
14 June 2011, 03:50 PM ET
The results of three new studies point to a slowdown of solar activity even as the current solar cycle ramps up.
10 June 2011, 05:00 PM ET
Astronomers are set to reveal a "major result" about the sunspot cycle on Tuesday (June 14).
09 June 2011, 12:34 PM ET
A unique event on the sun this week ejected loads of material into space that then rained back down on the solar surface.
08 June 2011, 05:14 PM ET
A recent and powerful solar storm could trigger luminous aurora displays for some lucky skywatchers.
07 June 2011, 02:21 PM ET
See video of the spectacular June 7 solar flare and sun eruption.
31 May 2011, 05:21 PM ET
For the second time in 10 days, a comet has plunged into the sun just after a huge solar eruption.
26 May 2011, 06:23 AM ET
Spaceships and satellites can encounter stormy "seas" of debris, radiation and electromagnetic fields. Europe's space situation awareness program is anchoring new technologies and procedures to keep spacecraft afloat.
18 May 2011, 10:00 AM ET
The magnetosphere protects life on Earth from harmful solar storms.
17 May 2011, 07:30 AM ET
Super-hot bubbles of plasma feed the powerful solar storms that can wreak havoc on Earth, new research suggests.
13 May 2011, 03:21 PM ET
A comet plunged into the sun this week just as a huge solar eruption exploded.
09 May 2011, 04:40 PM ET
Hot plasma currents drag old decaying sunspots into the Sun interior, where they are re-animated by the magnetic dynamo and brought back up to the surface for the next cycle of solar activity.
02 May 2011, 04:56 PM ET
The solar wind impacting the Earth on the May 1, 2011 erupted in a magnificent display of colorful auroras.
02 May 2011, 10:03 AM ET
Rotating sunspots that twist the sun's magnetic field triggered a powerful X-class solar flare.
29 April 2011, 04:25 PM ET
It may be decades before humanity sets foot on Mars, but we're only five years away from sampling space beyond our solar system for the first time.
29 April 2011, 04:24 PM ET
Amplified hiss-like radio noise generated by electrons that traveled along magnetic field lines from Enceladus to an aurora on Saturn were captured by NASA's Cassini spacecraft.
29 April 2011, 04:24 PM ET
Here are five facts about NASA's twin Voyager 1 and 2 spacecraft, which are set to leave our solar system by 2016 or so.
20 April 2011, 12:48 PM ET
Saturn's icy moon Enceladus creates aurora glow on its parent planet.
18 April 2011, 03:38 PM ET
Studying radio emissions from auroras of Jupiter-like planets could be another technique for detecting exoplanets.
18 April 2011, 08:46 AM ET
These videos show two so-called "quiescent prominences," sheets of gas that hang in the sun's outer atmosphere.
15 April 2011, 04:14 PM ET
After spending three years in a deep sleep of historic proportions, the sun is finally starting to wake up.
13 April 2011, 06:00 AM ET
When powerful sun storms set off dazzling auroras in March, photographer Torje Sorgjerd was ready.