18 March 2010, 02:13 PM ET
Six years of Cassini observations shed light on Saturn's rings, magnetic shield.
12 March 2010, 11:45 AM ET
Killer electrons generated in Earth's magnetic shield when solar storms hit.
05 March 2010, 07:22 AM ET
Early Earth's magnetic field weaker than today, likely led to water loss from atmosphere, bigger auroras.
27 February 2010, 06:08 AM ET
Jupiter, the largest planet in the solar system, is about to welcome a robotic visitor in the form of NASA’s New Horizons probe on Wednesday.
11 February 2010, 10:11 AM ET
Hubble films Saturn edge-on during equinox, sees auroras over poles.
11 February 2010, 05:07 AM ET
Hubble captured Saturn's equinox in 2009, including auroral displays over both the planet's poles.
09 February 2010, 05:37 AM ET
Science has only just begun to understand how cyclical changes in the Sun effect Earth's weather and climate. But the more technological human society grows, the more vulnerable we may become.
09 February 2010, 05:36 AM ET
Hot fusion fires and strong magnetic fields shape massive solar outbursts. Watch how this stellar instrument tunes itself up to serenade its planets with energy.
09 February 2010, 05:35 AM ET
Venus is a virtual twin of Earth in size, mass and basic composition. So why is its surface a hellish high-temperature desert? Turns out the Sun may have dealt this planet a death blow.
09 February 2010, 05:34 AM ET
It should have been all quiet on the Sun. But an unexpected series of solar events put Earth in the cross-hairs of a major geomagnetic storm.
07 February 2010, 10:15 AM ET
A new group of sunspots has produced moderate (M-class) solar flares, but forecasters say it could unleash a large (X-class) flare.
28 January 2010, 05:15 AM ET
NASA's Solar Dynamics Observatory will looks for sunspots and solar flares with better resolution than even HDTV.
21 January 2010, 05:19 PM ET
NASA plans to launch a new spacecraft, the Solar Dynamics Observatory (SDO), to take the most detailed observations ever of the sun and its complex weather.
17 December 2009, 03:28 PM ET
Cameras over poles spot auroras colliding for first time.
17 December 2009, 09:44 AM ET
When sun is at minimum in solar cycle, outer layers of Earth's atmosphere cool substantially.
10 December 2009, 11:28 AM ET
A spectacular spiral light show in the sky above Norway Wednesday was caused by a Russian missile that failed just after launch, according to Russia’s defense ministry.
02 December 2009, 07:21 AM ET
The planet is totally lopsided. Why? Astonishing evidence of past cataclysms explains why Earth seems not to have living neighbors.
25 November 2009, 11:18 AM ET
Images, movies from STEREO spacecraft confirm reality of solar tsunamis.
24 November 2009, 03:11 PM ET
As on Earth, electrical fields above Saturn interact with atmospheric chemicals to produce shimmering lights above the polar regions.
24 November 2009, 09:35 AM ET
The first video of auroras above the Saturn reveals the tallest
known "northern lights" in the solar system, flickering in shape and
24 November 2009, 09:08 AM ET
New solar observatory to probe sun's inner and outer workings.
18 November 2009, 01:55 PM ET
An exploding space rock lit up the skies over parts of the western United States.
17 November 2009, 09:25 AM ET
SUNRISE telescope images sun's surface from Earth's stratosphere.
30 September 2009, 09:50 AM ET
A NASA spacecraft that completed its third and final flyby of the planet Mercury yesterday, snapping new pictures of the innermost planet, had a small data hiccup that has delayed release of the images.
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.