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.
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.