13 July 2012, 04:23 PM ET
The warning system measures the intensity of charged particles from solar eruptions.
13 July 2012, 12:11 PM ET
NASA's Solar Dynamics Observatory has provided multiple up close views in different wavelengths of the X1.4-class flare of July 12th, 2012. A geomagnetic storm and aurora sightings over a larger area on Earth are possible on July 14th.
13 July 2012, 11:05 AM ET
Thursday's powerful solar eruption could bring spectacular auroras to the continental United States.
12 July 2012, 04:45 PM ET
See spectacular northern lights pictures from July 2012 sent in to SPACE.com.
12 July 2012, 02:43 PM ET
A huge Earth-facing sunspot - Active Region 1520 - unleased an X1.4-class solar flare on July 12, 2012. A coronal mass ejection could be speeding towards Earth to cause geomagnetic havoc.
12 July 2012, 02:21 PM ET
The huge solar flare marked the second X-class sun storm in a week.
10 July 2012, 11:05 AM ET
Sprites are ultra-fast bursts of electricity extending to the edge of space.
09 July 2012, 04:00 PM ET
The odd clapping noise is generated just 230 feet or so Earth's surface, researchers say.
09 July 2012, 02:35 PM ET
Energetic particles that cause the Aurora Borealis "northern lights" may also be responsible for an odd clapping sound heard by some observers.
06 July 2012, 10:23 PM ET
Threatening for days to unleash the most powerful class of solar flare, sunspot AR1515 erupted with an X-1.1 flare on July 6th, 2012. Captured by NASA's Solar Dynamics Observatory.
06 July 2012, 08:41 PM ET
The giant sunspot AR1515 unleashed a powerful X1.1 solar flare, the strongest for the summer season.
05 July 2012, 04:42 PM ET
The sun unleashed a powerful M5.6-class solar flare from sunspot AR1515 on July 4, 2012, just in time for the Fourth of July celebrations marking the U.S. Independence Day holiday.
05 July 2012, 04:36 PM ET
See images solar flares erupting from sunspot AR1515 in July 2012.
05 July 2012, 04:31 PM ET
The flare came from an active sunspot region that has now spewed 12 solar flares since July 3.
04 July 2012, 10:50 AM ET
Seeing spots on the sun has a long history. Check out some great sunspot photos.
04 July 2012, 09:07 AM ET
The sun is firing off some fireworks of its own on the Fourth of July.
02 July 2012, 05:31 PM ET
The sun let loose with a M5.6-class solar flare on July 2.
02 July 2012, 11:32 AM ET
Sunspot AR1515 unleashed an M5.6 flare on July 2nd, 2012. The resulting coronal mass ejection (CME) may cause geomagnetic storms on Earth in coming days.
29 June 2012, 01:49 PM ET
A strong flare erupted from sunspot AR1513 on June 29th, 2012 and the Solar Dynamics Observatory was on hand to record it with its ultraviolet camera. This time-lapse is looped and slowed for a close-up view.
28 June 2012, 10:11 AM ET
The astronomers used the Hubble Space Telescope to study the planet's atmosphere.
28 June 2012, 08:56 AM ET
The Hubble Space Telescope has seen a burst of evaporation in the upper atmosphere of exoplanet HD 189733b following a intense flare from its parent star - leading scientists to believe that the extreme x-ray radiation from the flare is the culprit.
27 June 2012, 01:01 PM ET
The sun's super-tornadoes are thousands of miles across and may super-heat the star's atmosphere.
26 June 2012, 04:02 PM ET
Solar storms can wreak havoc on power grids and communications infrastructure.
22 June 2012, 10:07 AM ET
See photos from astrophotographers of great aurora scenes from June 2012.
22 June 2012, 07:00 AM ET
The video incorporates thousands of images of auroras over northern Sweden.
21 June 2012, 07:00 AM ET
The solar prominence was seen on June 18 by the Solar Dynamics Observatory.
20 June 2012, 05:16 PM ET
The Slooh Space Camera will air a special show to celebrate the new season.
19 June 2012, 01:56 PM ET
Chad Blakley spent 2000 hours over the last three years photographing auroras in Abisko National Park in Sweden. Editor Thomas Malkowicz compiled time-lapses of thousands of still images to create this truly epic video for www.lightsoverlapland.com.
19 June 2012, 12:02 PM ET
A solar prominence erupted on June 18th, 2012 to some resembling the terrifying creature from the Alien movie series. NASA's Solar Dynamics Observatory team dubbed the phenomenon the "Alien Prometheus Prominence".
18 June 2012, 04:58 PM ET
The flares unleashed two coronal mass ejections that hit Earth on June 16.
18 June 2012, 02:13 PM ET
Sunspot AR 1504 unleashed an M Class flare on June 14th, 2012. The solar storm reached Earth, unraveling auroras in the magnetosphere on June 16th.
14 June 2012, 07:00 AM ET
The T-shirt had kissed the edge of Alaska's northern lights.
12 June 2012, 04:18 PM ET
The powerful March 7th, 2012 X5.4 class flare lit up the instrumentation on the Fermi Gamma-Ray Telescope becoming the brightest object in its field of view. The gamma rays peaked at 2 billion times the energy of visible light.
12 June 2012, 03:21 PM ET
The massive solar flare erupted from the sun on March 7, 2012.
11 June 2012, 07:00 AM ET
Astrophotographer Vegastar Carpentier captured this amazing view of the giant sunspot AR 1476.
07 June 2012, 10:38 AM ET
The northern lights are more formally known as auroras, and are caused by interactions between the solar wind and the Earth's magnetic field.