25 October 2014, 06:37 AM ET
The sun unleashed a major solar flare from a colossal sunspot on Friday (Oct. 24), the fourth big flare from the star in less than a week. The sunspot is the largest active region on the sun in the last 24 years, NASA scientists say.
22 October 2014, 07:25 PM ET
On October 22nd, 2012, NASA's Solar Dynamics Observatory captured an M-class and X-class flare erupting from sunspot AR2192.
22 October 2014, 01:55 PM ET
Eruptions on the sun's surface are probably caused by giant, unstable magnetic plasma arches, a new study reports — a discovery that brings scientists one step closer to predicting solar outbursts that can wreak havoc on Earth.
21 October 2014, 03:34 PM ET
The sun fired off an X-class solar flare — the most powerful type — that peaked at 1:01 a.m. EDT Sunday. NASA's Solar Dynamics Observatory spacecraft captured photos and video of the intense sun storm, which researchers classified as an X1.1 flare.
19 October 2014, 09:00 AM ET
An large sunspot (AR2192) emitted a X1-class solar flare on October 19th, 2014. NASA's Solar Dynamics Observatory captured the fireworks. The blast site was not Earth-directed.
16 October 2014, 02:13 PM ET
A NASA probe has peered into the sun's atmosphere and found 'bombs' of plasma, jets that affect solar wind and nanoflares that rapidly accelerate particles.
14 October 2014, 12:49 PM ET
Boo! An amazing new photo taken by a NASA spacecraft seems to show the sun with creepy jack-o-lantern grin just in time for Halloween.
08 October 2014, 09:48 AM ET
The sinuous feature, which was imaged on Sept. 30 by NASA's Solar Dynamics Observatory (SDO), extends for about 1 million miles (1.6 million kilometers) — about 100 times the width of Earth, agency officials said.
08 October 2014, 09:00 AM ET
An analysis of rocks brought back to Earth by NASA's Apollo missions suggests that most of the water trapped in rocks on the moon's surface originated from streams of solar particles rather than comet impacts.
03 October 2014, 01:47 PM ET
A NASA satellite charged with staring at the sun captured an incredible image of the star bursting forth with a moderately sized solar flare Thursday.
03 October 2014, 08:32 AM ET
Chad Blakley (lightsoverlapland.com) captured the Aurora Borealis over Abisko National Park in September 2014. He says that they "have enjoyed powerful auroras eight out of the last ten nights."
02 October 2014, 06:10 PM ET
Sunspot AR2172-AR2173 erupted with an M7.3-class flare on October 2nd, 2014. The eruption was not Earth-directed, as it was on the Sun's western limb and rotating out of view (as seen by NASA's Solar Dynamics Observatory).
02 October 2014, 07:00 AM ET
On April 23, NASA's Swift satellite observed an incredibly intense flare coming from DG Canum Venaticorum, a system of two red dwarfs located about 60 light-years from Earth. The eruption put to shame anything ever seen on the sun.
25 September 2014, 11:54 AM ET
Three American soldiers* may have died in Afghanistan’s battle of Takur Ghar because of disruptions caused by plasma bubbles – a form of space weather – according to a new study.
24 September 2014, 12:46 PM ET
On July 23rd, 2012, a coronal mass ejection, traveling between 1,800 and 2,200 MPH, fastest ever recorded by NASA's Solar Terrestrial Relations Observatory (STEREO), fortunately was not Earth-directed.
22 September 2014, 11:25 AM ET
A solar flare is a light-speed traveling burst of x-rays and energy, while a coronal mass ejection (CME) is a giant cloud of particles emitted from the Sun. Both can affect the Earth in different ways and sometimes they happen together.
15 September 2014, 05:28 PM ET
Back-to-back eruptions on the sun sparked a geomagnetic storm last week, which generated dazzling auroras over the northern latitudes.
13 September 2014, 11:19 AM ET
Chad Blakley (http://lightsoverlapland.com) captured a vibrant display of Northern Lights over Abisko National Park in Sweden on Sept. 12, 2014. They were generated by a KP-7 geomagnetic storm that hit Earth as a result of two coronal mass ejections.
12 September 2014, 01:03 PM ET
Skywatchers on the ground are already catching sight of some amazing looking auroras produced by solar material blown out from the sun during two major eruptions this week.
12 September 2014, 06:32 AM ET
Two waves of solar material blown out by powerful sun eruptions n this week are hitting the Earth now, and could amplify the aurora displays for observers in northern regions.
11 September 2014, 04:36 PM ET
Powerful solar flares from the sun this week may amplify the northern lights displays over parts of the northern United States through the weekend, space weather scientists say.
11 September 2014, 04:17 PM ET
On Sept. 10, 2014, the sun unleashed a massive X1.6-class solar flare aimed directly at Earth. Take a look at amazing photos of the solar storm and its effects on Earth in this Space.com gallery.
11 September 2014, 07:00 AM ET
The sun fired off strong flares Tuesday and Wednesday from a sunspot known as Active Region 2158, which will be the focus of a free webcast hosted today at 1 p.m. EDT by the online Slooh Community Observatory. Watch it here on Space.com.
10 September 2014, 05:24 PM ET
The sun unleashed an X-class solar flare — the most powerful type — at 1:45 p.m. EDT today from an Earth-facing sunspot known as Active Region 2158. The flare poses no danger to anyone here on Earth, and orbiting astronauts are safe as well.
03 September 2014, 12:44 PM ET
A NASA satellite watched as a huge filament of plasma that had been creeping across the face of the sun erupted yesterday (Sept. 2).
26 August 2014, 02:52 PM ET
The sun kicked off this week with an explosive solar flare that, while not aimed directly at Earth, may be a hotspot to watch over the next few days.
25 August 2014, 03:40 PM ET
Expedition 40 astronaut Alexander Gerst said "We flew right through a massive aurora after last week's solar mass ejection." The space station maintains a altitude of between 205 and 270 miles above Earth.
23 August 2014, 08:20 AM ET
The northern lights illuminated Arctic skies earlier this week in a stunning display that could even be appreciated by astronauts living on the International Space Station.
22 August 2014, 07:57 PM ET
Sunspot AR2149 erupted with an M3-class flare on August 21st, 2014. NASA's Solar Dynamics Observatory captured the fireworks.
13 August 2014, 11:00 AM ET
Small 'nanoflares' erupting from the sun might be the key to unlocking a cosmic mystery, according to a new study.
29 July 2014, 11:30 AM ET
If a huge solar eruption in 2012 had hit the Earth, the effects would have been so devastating that we'd still be recovering two years later, scientists working on several new studies conclude.
08 July 2014, 03:38 PM ET
An M6-class flare erupted from sunspot AR2113 on July 8th, 2014. NASA's Solar Dynamics Observatory captured the fireworks in multiple wavelengths.
24 June 2014, 02:36 PM ET
The Big Bear Solar Observatory has delivered high definition views of a sunspot. The data will be used to unravel mysteries presented by these dark and concentrated magnetic fields.
19 June 2014, 07:29 AM ET
The sun is supposed to be at the height of its 11-year active cycle, but for the most part things have been pretty quiet.
11 June 2014, 10:06 AM ET
Sunspot AR2087 had already popped two X-class Flares on June 10, 2014 when, on June 11th, it erupted with M-5 and X-1 Flares back to back. The Sunlit side of the Earth may face some HF radio blackouts. FULL STORY: http://goo.gl/nJfcV1
11 June 2014, 09:54 AM ET
The sun is hitting its stride. Earth's closest star shot off yet another powerful solar flare today (June 11) after producing a pair of major solar storms Tuesday (June 10).