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.
03 July 2013, 09:30 AM ET
On July 1st, 2013, a large prominence erupted off the Sun's eastern limb and on July 3rd, an M1.5-class flare made a statement. Neither eruptions were Earth-directed. NASA's Solar Dynamics Observatory snapped imagery.
02 July 2013, 07:02 AM ET
Some scientists think a massive solar storm could knock out the power grid for years.
27 June 2013, 10:40 PM ET
Scientists hope the IRIS sun telescope helps to better understand how energy moves around the sun.
27 June 2013, 07:00 AM ET
IRIS will help scientists understand how energy moves around the sun.
25 June 2013, 04:16 PM ET
A power outage along the California cost pushed IRIS' launch by one day.
25 June 2013, 06:00 AM ET
Night sky photographer Mike Taylor captured two blazing photos and the Milky Way galaxy from Maine.
24 June 2013, 07:12 AM ET
Two strong M2-class solar flares erupted from the Sun's eastern limb on June 21st and June 23rd, 2013. Sunspots AR1777 and AR1778 were the source of the explosions and neither were Earth-directed. NASA's Solar Dynamics Observatory captured imagery.
20 June 2013, 02:01 PM ET
A June 2011 solar eruption sheds light on how newborn stars suck up raw materials, researchers say.
20 June 2013, 01:41 PM ET
See dazzling photos of NASA's sounding rocket launches in 2013
14 June 2013, 11:29 AM ET
This photo of the aurora borealis was shot from Crater Lake National Park in Oregon.
14 June 2013, 07:26 AM ET
NASA's Solar Dynamics Observatory had a fantastic view of the eruption on June 13th, 2013. It occured on the north western limb of the Sun and plasma can be seen flowing back to the surface along magnetic field lines.