22 September 2010, 04:08 PM ET
Two NASA satellites peering at the sun have snapped photos of Mercury's long, comet-like tail, and it took an interested amateur to bring the pictures to light.
22 September 2010, 11:33 AM ET
When storms of charged particles rage on the sun, they don't always travel in a straight line, a new study finds.
20 September 2010, 11:46 AM ET
A new website will broadcast live views of the northern lights through 2013.
13 September 2010, 12:00 PM ET
The luminous auroras of Earth's northern lights show may get a boost Monday from a weekend solar eruption.
10 September 2010, 06:12 PM ET
The sun unleashed a huge solar flare and eruption Sept. 8, but the sun storm is not aimed at Earth.
03 September 2010, 04:13 PM ET
A new picture reveals our sun up-close like never before.
02 September 2010, 06:49 PM ET
NASA is developing a mission to plunge a car-sized probe directly into the sun's atmosphere, exploring a region no spacecraft has ever visited.
23 August 2010, 07:24 PM ET
MOSCOW (Interfax) – A Dnepr civilian rocket converted from the Russian RS-20 Voyevoda intercontinental ballistic missile (known as SS-18 or Satan in the West) orbited two Japanese OICETS and INDEX satellites, at 5:25 p.m. EDT (2125 GMT) on Tuesday, the Sp
17 August 2010, 02:00 PM ET
The IBEX spacecraft has taken unprecedented images of the solar wind crashing into Earth's protective magnetosphere.
09 August 2010, 05:20 PM ET
Another powerful solar flare may trigger more spectacular aurora views for lucky skywatchers.
06 August 2010, 05:46 PM ET
A dramatically vivid new image of the sun shows the Aug. 1 solar eruption in the star's northern hemisphere that blasted charged particles in Earth's direction, triggering stunning aurora displays and geomagnetic storms that lasted about 12 hours.
06 August 2010, 10:27 AM ET
A solar flare from the sun this week poses no threat to astronauts on the International Space Station or plans for vital spacewalk repairs on the orbiting lab, NASA officials have said.
05 August 2010, 04:15 PM ET
A long lull in solar activity recently may have been caused by changes in the conveyor-belt-like process that moves material around the surface of our star, a new study found.
05 August 2010, 10:35 AM ET
On August 1, Earth orbiting satellites detected a C3-class solar flare. At about the same time, an enormous magnetic filament stretching across the sun's northern hemisphere erupted. Recorded by STEREO and SDO respectively.
05 August 2010, 09:43 AM ET
One of the fastest big solar flares in years has been observed by NASA spacecraft watching the sun.
02 August 2010, 06:17 PM ET
Skywatchers at high latitudes could be in for a spectacular treat of northern lights, the aurora borealis, Tuesday and Wednesday: After a relatively quiet stretch, it appears the sun is ramping up its activity.
27 July 2010, 05:48 PM ET
Like an earthquake in space, so-called spacequakes are temblors in Earth's magnetic field caused by plasma flying off the sun.
13 July 2010, 08:56 AM ET
Scientists have identified a massive eruption from the sun in April that reached all the way to Earth and may be responsible for knocking out a satellite, creating a so-called 'zombiesat.' The coronal mass ejection occurred on April 3 and may have disable
29 June 2010, 08:10 AM ET
Contamination in astrophysical soft X-ray observations could actually hold the key to dramatically improving space weather forecasts.
23 June 2010, 05:57 PM ET
A new space camera designed to watch the sun from its perch aboard an advanced weather satellite has taken its first photograph of our nearest star.
21 June 2010, 12:59 PM ET
Aurora over South Pole likely caused by solar storm.
14 June 2010, 06:53 AM ET
The sun's temper ebbs and flows on what scientists had thought was a pretty predictable cycle, but lately our closest star has been acting up..
09 June 2010, 12:11 PM ET
The sun is about to get a lot more active, which could have ill effects on Earth. So to prepare, top sun scientists met Tuesday to discuss the best ways to protect Earth's satellites and other vital systems from the coming solar storms.
27 May 2010, 02:09 PM ET
Cosmic material that has settled on the moon over billions of years could shed light on where a peculiar type of nitrogen in our solar system came from.
07 May 2010, 09:28 AM ET
A strong geomagnetic storm set off a dazzling aurora display this week, and it could happen again Saturday.
03 May 2010, 01:40 PM ET
The out-of-control satellite Galaxy 15 is posing a risk to other nearby communications satellites as it wanders from its former orbit.
29 April 2010, 05:44 PM ET
A massive blizzard is raging on Saturn a storm so large and fierce NASA astronomers and amateur skywatchers can see it from Earth.
28 April 2010, 12:28 PM ET
NASA's new Solar Dynamics Observatory observed a massive eruption on the sun--one of the biggest in years. The second loop is a color-coded temperature movie of the eruption. Red and oranges are, blues and greens are hot.
27 April 2010, 08:08 AM ET
Solar winds that flow over natural obstructions on the moon may create electrically charged polar lunar craters, according to new calculations from NASA.
23 April 2010, 03:34 AM ET
A prominence of gas leaps off the surface of the sun in a new image from NASA's powerful Solar Dynamics Observatory.
22 April 2010, 08:18 AM ET
Because it can simultaneously monitor several wavelengths of the sun's light and quickly grab very hi-res images, the new SDO is sparking a revolution in our understanding of the Sun.
21 April 2010, 02:33 PM ET
First photos from NASA's Solar Dynamics Observatory were released today, revealing new details of the sun.
14 April 2010, 07:02 PM ET
Saturn ice moon Enceladus creates ripples and bubbles in plasma surrounding giant planet.
13 April 2010, 12:45 PM ET
The world's first weather satellite, TIROS-1, launched 50 years ago,and changed the world.
06 April 2010, 01:48 PM ET
NASA is investing in a new space weather forecast system that could give days of warning for space storms headed for Mars and Earth.
06 April 2010, 11:19 AM ET
A stunning new photo shows the International Space Station flying through a dazzling aurora display above Earth.