19 September 2013, 05:14 PM ET
The sun's insides churn much more quickly than previously thought, a new study shows, a finding expected to improve predictions of solar storms. Plasma flows are more complex and penetrate less deeply than scientists had thought.
19 September 2013, 03:17 PM ET
Although 2013 was expected to be a year of "Solar Maximum" activity, the Sun has gone disquietingly quiet. It's not a topic for worry, but it has solar scientists scratching their heads.
16 September 2013, 03:30 PM ET
High-speed eruptions of charged particles from the sun may be to blame for recent failures of satellites that people rely on to watch TV and use the Internet, a new study finds.
13 September 2013, 05:25 AM ET
A refurbished Clinton-era satellite that languished in storage for years is now on track to launch in early 2015. The mission, called the Deep Space Climate Observatory, or DSCOVR for short, is meeting its budget and schedule requirements.
13 September 2013, 05:00 AM ET
Veteran astrophotographer Göran Strand of Östersund, Sweden captured this amazing view of a fiery solar prominence erupting from the sun on Sept. 4, 2013. See how he did SAFELY here.
11 September 2013, 02:13 PM ET
This timelapse of the entire sky during an aurora was filmed in 3D using two digital SLR's
11 September 2013, 02:01 PM ET
Here are five facts about NASA's twin Voyager 1 and 2 spacecraft.
11 September 2013, 01:54 PM ET
Regular digital SLR cameras have been used to make 3D images and video of Earth's auroras, suggested that citizen scientists could take such pictures and help scientists study the phenomenon.
11 September 2013, 01:36 PM ET
Night sky photographer Thomas Kast captured this amazing view of the northern lights over Oulunsalo, Finland on Aug. 31. See what makes the northern lights tick.
05 September 2013, 02:01 PM ET
Scientists examining four decades' worth of data have discovered that the interstellar gas breezing through the solar system has shifted in direction by 6 degrees, a finding that could affect how we view not only the galaxy but the sun itself.
29 August 2013, 03:17 PM ET
The glowing colors and dancing lines of the Northern Lights could soon appear inside an educational institution near you.
22 August 2013, 04:55 PM ET
The sun fired off an intense solar storm at Earth Wednesday (Aug. 21) — the second in two days — hurtling billions of tons of charged particles at our planet, but should not pose a threat to people on the ground, NASA says. See what happened.
21 August 2013, 04:18 PM ET
Launched in 2008, NASA's Fermi Gamma-ray Space Telescope has given scientists the ability to explore high-energy processes associated with a number of cosmic phenomena: black holes, solar flares, rapidly spinning neutron stars, & super nova remnants.
21 August 2013, 04:17 PM ET
Veteran astrophotographer John Chumack has captured spectacular photos of a huge solar filament crawling across the surface of the sun. See how he photographed the sun filament on Aug. 11 and how to safely observe the sun on your own.
20 August 2013, 02:18 PM ET
The sun unleashed a powerful storm early Tuesday morning (Aug. 20), sending a huge cloud of superheated particles rocketing toward Earth. The eruption, known as a coronal mass ejection (CME), occurred at 4:24 a.m. EDT Tuesday.
20 August 2013, 07:00 AM ET
If you can't make it to Sweden to see the Northern Lights, the next best thing is a new video of the aurora lights compiled from thousands of hours of observations by videographer Chad Blakley.
16 August 2013, 01:17 PM ET
Photographer Chad Blakley and video editor Tom Malkowicz have outdone themselves in a compilation of Northern Lights from 2012 and 2013. Some of the sequences were reproduced to deliver a near 'just like you were there' real-time feel.
12 August 2013, 07:00 AM ET
The sun's magnetic field will reverse its polarity three or four months from now, as it does every 11 years at the peak of the solar activity cycle. Researchers know enough about this process to predict when it will occur, but its causes remain mysterious
07 August 2013, 07:06 PM ET
The sun's magnetic field is set to reverse its polarity in the next few months. But the shift won't spark an increase in solar storms or other events that could have a damaging effect on Earth and its inhabitants, researchers say.
07 August 2013, 09:55 AM ET
Take a look at the sun's mightiest solar flares and eruptions in written history.
06 August 2013, 04:46 PM ET
A veteran astrophotographer’s gut feeling led to a spectacular panoramic image of the Milky Way over the wild White Mountains of New Hampshire.
06 August 2013, 04:12 PM ET
The sun is going to flip. In an event that occurs once every 11 years, the star's magnetic field will reverse its polarity in a matter of months, according to new research from NASA-supported observatories.
06 August 2013, 11:09 AM ET
During the height of the solar cycle, the magnetic field changes polarity, pushing a ripple effect across the Solar System that's detectable by even the far-away Voyager probes.
02 August 2013, 10:23 AM ET
This stunning space wallpaper shows the view of the sun from the SWAP (Sun Watcher using Active Pixel System detector and Image Processing) instrument onboard ESA's Proba-2 satellite.
01 August 2013, 07:12 PM ET
Solar wind is a constant stream of plasma and particles emanating from the sun.
31 July 2013, 06:47 PM ET
A sun-watching spacecraft spotted our closest star opening its arms to the cosmos. Two strands of plasma from an eruption in the sun's atmosphere were captured in observations with NASA's STEREO A satellite.
24 July 2013, 03:42 PM ET
Over an eight hour period on July 20th 2013, a solar prominence stretched over the western limb of the Sun (as viewed from Earth). It resembled the sliding reptile during its super-heated travels.
24 July 2013, 10:00 AM ET
A space telescope aimed at the sun has spotted a gigantic hole in the solar atmosphere — a dark spot that covers nearly a quarter of our closest star, spewing solar material and gas into space.
23 July 2013, 04:59 PM ET
SDO provides insights on the structure of the sun's magnetic field, as well as how energy is transferred from the sun into space.
23 July 2013, 01:18 PM ET
Veteran night sky photographer Jeff Berkes captured this spectacular view of the northern lights with lightning, a Bootid meteor and the Milky Way Galaxy. See how Berkes made the stunning image and his thoughts on the night sky vista.
18 July 2013, 01:18 PM ET
NASA's MAVEN mission's Neutral Gas Ion Mass Spectrometer will look at how matter interacts with the solar wind in the Martian atmosphere. This data could reveal why the formally wet Red Planet has become the barren world we see today.
17 July 2013, 04:30 PM ET
A night sky photographer takes a stunning photo of an aurora over Mt. Katahdin in Maine.
12 July 2013, 01:00 PM ET
Though the sun is at its 11-year peak of activity, our closest star has been rather quiet. This year's solar maximum is shaping up to be the weakest in 100 years - the weakest since Space Age began - and the next cycle could be even weaker.
09 July 2013, 10:47 AM ET
The online Slooh Space Camera will webcast live telescope views of the massive sunspot AR1785 from Arizona today at 1 p.m. EDT (1700 GMT). The sunspot is 11 times the size of Earth and currently facing our planet, a solar flare threat.
09 July 2013, 07:00 AM ET
Astronomers have detected exotic antimatter particles flying from the sun during solar flares — a discovery that could help scientists understand this mysterious sibling to matter.
03 July 2013, 12:23 PM ET
The sun fired off an M1.5-class solar flare on July 3 as an early preview to the Fourth of July fireworks, NASA officials say.