29 September 2009, 01:49 PM ET
28 September 2009, 03:03 PM ET
NASA's MESSENGER spacecraft is set to make a close approach to the planet Mercury, revealing new views along the way.
17 September 2009, 09:03 AM ET
Even during low points in the Sun's solar cycle, solar winds still bombard the Earth, a new study finds
02 September 2009, 09:40 AM ET
On Sept. 2, 1859, an incredible storm of charged particles sent by the sun slammed into Earth's atmosphere, overpowered it, and caused havoc on the ground.
27 August 2009, 02:08 PM ET
Study finds links between solar energy output and changes in stratosphere circulation and ocean temperature.
18 August 2009, 10:03 AM ET
Sudden bursts of energy called nanoflares heat parts of sun's atmosphere.
30 July 2009, 05:14 PM ET
Bright spot appears in Venus' clouds; cause unknown.
06 July 2009, 10:08 AM ET
After one of the longest sunspot droughts in modern times, solar activity picked up quickly over the weekend.
18 June 2009, 02:04 PM ET
New simulation models dynamics of sunspots; could help understand how they work.
17 June 2009, 05:36 PM ET
Scientists have been puzzling in recent months over the sun's lack of spots.
08 June 2009, 09:03 AM ET
Spacecraft discovers new clues to how Mercury hangs on to its atmosphere.
04 June 2009, 12:56 PM ET
A dummy astronaut packed with bone and blood cells will endure an intense radiation shower that simulates a solar flare.
02 June 2009, 09:53 AM ET
Scientists have pinpointed where an Earthbound space storm would strike when it crashed into the atmosphere.
28 May 2009, 11:49 AM ET
Large planets, like Saturn and Jupiter, could reflect activity on the Sun that we can see directly. But they also make and scatter their own X-rays. Podcast available from: chandra.harvard.edu
27 May 2009, 04:45 PM ET
The Sunrise telescope will launch by balloon sometime in June to view the sun's surface.
09 May 2009, 06:00 AM ET
If all goes well, three space missions will soon observe the Sun simultaneously.
08 May 2009, 07:48 PM ET
However, big Earth-threatening solar storms could still kick up at any time, the researchers cautioned today.
05 May 2009, 02:41 PM ET
The sun's recent lack of activity is unlikely to lead to another Little Ice Age.
23 April 2009, 05:16 PM ET
New observations of space tornadoes shed light on auroras.
14 April 2009, 02:25 PM ET
Twin STEREO spacecraft get three-dimensional view of coronal mass ejection.
09 April 2009, 02:39 PM ET
New instrument detects boundary between Earth's atmosphere and solar particles.
20 March 2009, 04:52 PM ET
Multi-robot planetary exploration would be a complex affair, with humans working with a diverse team of mobile robots operating in a variety of control modes.
12 March 2009, 11:02 AM ET
Fermi telescope team makes map, list of best gamma ray sources yet found.
07 January 2009, 09:03 AM ET
A new study outlines grim possibilities on Earth for a worst-case scenario solar storm.
05 January 2009, 08:06 AM ET
New Venus Express data reveals evidence for the loss of water from the planet's day side.
16 December 2008, 03:20 PM ET
Solar particles penetrate Earth's magnetosphere at different points, in different ways and in greater amounts than though.
16 December 2008, 12:38 PM ET
Satellite observations who atmosphere expands and contracts in unexpected short time periods.
16 December 2008, 08:08 AM ET
A stream of hydrogen atoms was detected coming from a solar flare.
12 December 2008, 01:34 PM ET
A detailed analysis of the measurements of five different satellites has revealed the existence of warm cloak of plasma around Earth.
02 December 2008, 08:35 AM ET
Mars' ultraviolet auroral lights have been mapped for the first time.
12 November 2008, 01:01 PM ET
Cassini spacecraft photographs new aurora at Saturn's pole.
07 November 2008, 03:22 PM ET
After more than two years of very low sunspot activity and hardly any flares, the sun is ramping up activity now.
03 November 2008, 08:22 AM ET
Huge magnetic portals allow high-energy particle to jet from the sun to Earth.
17 October 2008, 02:42 PM ET
A new space telescope that aims to investigate the edge of the solar system is set to launch Sunday.
09 October 2008, 06:56 AM ET
Eight years from now, the Juno spacecraft will arrive at Jupiter.
06 October 2008, 03:12 PM ET
The IBEX spacecraft plans to study the farthest edge of the solar system.