25 January 2012, 08:16 AM ET
Lights Over Lapland photographer Chad Blakley captured this amazing view of the aurora borealis in Sweden on January 24th, 2012. The January 23rd solar flare and ensuing coronal mass ejection are the 'lighting engineers' of this incredible display.
23 January 2012, 12:33 PM ET
So far, winter in the continental United States has been tame at best, compared to 2011's onslaught of snowy days. Find out what the culprit is behind the mild winter and where mother nature has been dumping all her snow this winter.
23 January 2012, 09:06 AM ET
A massive sunspot released a M9-class solar flare (one step below the most powerful x-class flares) on January 23, 2012. The resulting coronal mass ejection may set off geomagnetic storms on Earth by January 24th or 25th.
06 January 2012, 05:21 PM ET
The sun erupted with a good-sized solar flare and a coronal mass ejection on its far-side beyond the view of SDO, but the resulting strands of particle clouds as seen in extreme ultraviolet light still made for quite a show on January 2,2012.
05 January 2012, 08:45 AM ET
A list of frequently asked questions about 2012 doomsday theories.
30 December 2011, 01:18 PM ET
The 2012 winter solstice will not bring about destruction of the planet, scientists say.
11 November 2011, 06:50 AM ET
No solar flare is powerful enough to do the job.
26 October 2011, 12:08 PM ET
The so-called "doomsday" comet Elenin was killed by the sun, NASA says.
17 October 2011, 05:40 PM ET
Despite the close approach, the world did not end.
14 October 2011, 07:31 AM ET
Bid farewell to the comet's debris, which won't pass by Earth again for 12,000 years.
25 September 2011, 08:00 AM ET
Was it the 'space chicken' nebula, Saturn's rings, a dark red moon over Chile or something else that grabbed you.
22 September 2011, 04:52 PM ET
Comet Elenin moves into SOHO sun observatory's field of view this week. Or does it?
21 September 2011, 03:04 PM ET
Skywatcher Michael Mattiazzo says his observations of comet Elenin hint at its possible breakup.
31 August 2011, 08:41 AM ET
Images captured of Comet Elenin by an amateur astronomer over several days in August 2011 show what appears to be its nucleus breaking apart and fading away as it approaches perihelion, the point in its orbit where it is nearest to the sun.
26 August 2011, 10:00 AM ET
Two fairly bright comets are gracing our skies: Comet Elenin and Comet Garradd.
17 August 2011, 12:09 PM ET
See NASA's most popular questions and answers about comet Elenin 2011 pass through the inner solar system.
17 August 2011, 10:59 AM ET
Comet Elenin will come closest to Earth on Oct. 16, if you call 22 million miles close.
11 August 2011, 07:00 AM ET
Comet Elenin passed within the field of view of one of NASA's twin STEREO spacecraft.
08 August 2011, 07:25 AM ET
Will the "prophesized" Niburu slam into the Earth? Is the Mayan calendar truly coming to an end in 2012? Jet Prepulsion Laboratory's Donald Yeomans dispels the myths and relays the scientific facts of the matter.
05 August 2011, 05:44 PM ET
The so-called 'Nemesis' star has not been flinging dangerous comets at Earth.
10 July 2011, 06:00 AM ET
From NASA's last shuttle launch to the true believers behind "planet" Nibiru, vote for your favorite space story this week.
09 July 2011, 12:48 PM ET
The last shuttle launch, a view of Nibiru, a monster Saturn storm and Elmo made space appearances this week.
20 May 2011, 01:32 PM ET
If doomsday happens tomorrow, will humans be able to survive in space?
20 May 2011, 12:29 PM ET
Free-floating Jupiter size planets are fairly common. Astronomers use a neat trick of Einstein’s math to find them. And, no, there aren’t any free-range monster-worlds lurking nearby.
09 May 2011, 05:16 PM ET
A comet first discovered last fall will be making a visit to the inner solar system soon.
25 February 2011, 06:00 AM ET
Some people think NASA's WISE may have already found evidence of a hypothetical giant planet in our solar system.
17 February 2011, 07:00 AM ET
Astronomical detectives have assembled a stellar lineup, identifying nearby stars that may come close enough to disrupt our solar system in the next billion years or so.
15 February 2011, 05:21 PM ET
Despite a spending freeze for NASA in the White House's new 2012 budget proposal, the space agency plans to prioritize commercial spaceflight.
15 February 2011, 03:05 PM ET
A claim by two astronomers of a planet four times the size of Jupiter in solar system is suspect, experts say.
14 February 2011, 11:28 AM ET
The Obama administration has announced its 2012 budget request Monday (Feb. 14), which freezes NASA's spending at 2010 levels.
13 January 2011, 01:08 PM ET
A dwarf galaxy that is too dim to see but is thought to orbit the Milky Way could soon be found using a new mathematical technique that analyzes ripples in the distribution of gas in spiral galaxies.
13 January 2011, 12:04 PM ET
Researchers have mapped out the dark matter in a sample of huge galaxies.
01 December 2010, 06:56 AM ET
Our sun may have a companion that disturbs comets from the edge of the solar system.
08 November 2010, 10:37 AM ET
A newly discovered comet that has caught the attention of skywatchers around the world appears to be undergoing some dynamic changes.
22 October 2010, 02:42 PM ET
Will the World End in 2012?
20 July 2010, 08:11 AM ET
Some astronomers believe a hidden mini star nicknamed Nemesis is orbiting the sun, and causing a regular cycle of mass extinctions. New research purportedly rules this idea out.