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.
13 June 2013, 04:46 PM ET
Sunjammer's sail measures 124 feet on a side.
13 June 2013, 07:00 AM ET
The Sunrise observatory is expected to land in Canada three or four days from now.
06 June 2013, 02:01 PM ET
Sungrazing comets explore regions of the sun's atmosphere off-limits to spacecraft.
06 June 2013, 10:36 AM ET
The Sun erupted with an M1.3-class flare on June 5ht, 2013. The region it came from (Active Region 1762) continues is very energetic and may erupt with a larger M-Class or X-Class flare in coming days, but is not expected to impact Earth.
05 June 2013, 11:12 AM ET
Charles Bolden addressed scientists and policymakers at the Space Weather Enterprise Forum in Maryland.
04 June 2013, 04:23 PM ET
The IRIS spacecraft is designed to study the sun's lower atmosphere in unprecedented detail.
03 June 2013, 05:04 PM ET
A star smaller than Jupiter regularly fires off flares as powerful as the biggest eruptions from our sun.
03 June 2013, 10:15 AM ET
P/2010 A2's dust tail stretches nearly three times the distance from the Earth to the moon.
30 May 2013, 01:46 PM ET
Astronauts on long interplanetary trips will face at least two kinds of radiation hazards. The Mars Science Lab’s Radiation Assessment Detector (RAD) has quantified the risk. Crews could get much more than the current accepted career dose.
29 May 2013, 10:33 AM ET
Massive 'hot Jupiters', gas giants that orbit close to their stars, are usually tidally locked, which means they have a permanent day side and permanent night side. The extreme differences in temperatures on the two sides drive powerful storms.