24 October 2014, 08:30 AM ET
Gravitational waves, invisible ripples in the fabric of space and time, might be detected by looking for the brightening of stars, researchers say.
24 October 2014, 08:00 AM ET
The moon blocked out part of the sun on Oct. 23, 2014 to create a stunning partial solar eclipse visible to observers across the United States.
23 October 2014, 06:59 PM ET
The Griffith Observatory in Los Angeles, California captured the solar eclipse on October 23rd, 2014. Five minutes of the eclipse has been sped up 15,000 times to show the movement of the Moon.
23 October 2014, 02:39 PM ET
A telescope orbiting Earth has captured a jaw-dropping image of a comet making an incredibly close flyby of Mars.
23 October 2014, 11:00 AM ET
The Hubble Space Telescope takes center stage at the new Hubble@25 exhibit at the Intrepid Sea, Air and Space Museum in New York City. Former NASA astronaut Mike Massimino, who visited Hubble twice, gives us a glimpse of the exhibit.
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, 06:36 PM ET
The Intrepid Sea, Air and Space Museum’s Senior Advisor for Space Programs and the exhibit's Co-Curator shares stories of his trips to service the Space Telescope and describes the exhibit.
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.
22 October 2014, 01:01 PM ET
The best look yet at nearly 500 comets around a distant star reveals these alien snowballs come in very different flavors, just like comets around the sun. These "exocomets" could shed light on what the solar system was like in its tumultuous youth.
22 October 2014, 01:00 PM ET
Astronomers at the La Silla Observatory in Chile took a census of comets around the star Beta Pictoris (62 light-years away), discovering they belong to two families.
22 October 2014, 01:00 PM ET
Astronomers have detected the signatures of hundreds of comets disintegrating in a distant, chaotic solar system 63 light-years away.
22 October 2014, 07:00 AM ET
The unmanned mission will apparently send a spacecraft around the moon; on its way back toward Earth, the probe will release a capsule to perform a high-speed plunge through the planet's atmosphere.
21 October 2014, 05:05 PM ET
See photos and images of the Mars-bound comet C/2013 A1 Siding Spring, which will buzz the Red Planet on Oct. 19, 2014. Comet Siding Spring was discovered in January 2013. Its pass through the inner solar system will be closely watched by Mars probes.
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.
21 October 2014, 03:03 PM ET
A highly magnetized neutron Star named SGR J1550-5418 erupted with a series of powerful x-ray and gamma-ray flares on Jan 22, 2009. NASA's Swift satellite observed the outburst over the course of 6 days.
21 October 2014, 02:50 PM ET
NASA's Mars Reconnaissance Orbiter and Opportunity rover have beamed back amazing views of a comet that made an extremely close pass of the Red Planet on Sunday (Oct. 19).
21 October 2014, 01:07 PM ET
NASA's Opportunity Rover and Mars Reconnaissance Orbiter had their cameras fixated on comet C/2013 A1 (Siding Spring) on October 19th, 2014.
20 October 2014, 02:30 PM ET
Three spacecraft at Mars survived a close brush with a comet that buzzed by the Red Planet Sunday (Oct. 19), while scientists on Earth captured some amazing images of the comet's close pass.
20 October 2014, 09:48 AM ET
Warning: Do not look directly at the Sun. On October 23rd, 2014, most of the North America will be treated to the eclipse. Viewing from the eastern U.S. will be especially beautiful, weather permitting, due to it occurring at the end of the day.
20 October 2014, 01:51 AM ET
Without proper regulation, the moon risks becoming an extra-planetary Wild West.
19 October 2014, 03:48 PM ET
Last week's lunar eclipse wasn't just a show for Earthlings, NASA's MESSENGER mission was also watching from Mercury, 66 million miles away.
19 October 2014, 03:40 PM ET
A comet is due to make a close flyby of Mars Sunday (Oct. 19), allowing scientists an unprecedented look at the comet as it flies by the Red Planet.
19 October 2014, 02:30 PM ET
Comet Siding Spring came within just 87,000 miles of the Martian surface at 2:27 p.m. EDT today — about one-third of the distance between Earth and the moon. The comet barreled by at 126,000 mph relative to the Red Planet, NASA officials said.
19 October 2014, 09:02 AM ET
A comet from the outer reaches of the solar system is due to give Mars a close shave on Sunday (Oct. 19), and you can watch the flyby live online.
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.
18 October 2014, 09:11 PM ET
NASA scientist Dr. Michelle L Thaller tells Space.com's @MiriKramer what you need to know about comet Siding Spring's fly-by, its implications for the Red Planet and how humans will be able to observe it. Full Coverage: http://goo.gl/0cnCEb
18 October 2014, 08:53 AM ET
The unmanned, reusable space plane landed at the Air Force Base in Californoa on October 17th, 2014. The Orbital Test Vehicle mission 3 (OTV-3) spent 22 months in space on a secret mission. Full Story: http://goo.gl/yDm3Ai
18 October 2014, 07:01 AM ET
Comet Siding Spring — unknown and undiscovered until 2013 — will zoom past the Red Planet Sunday afternoon (Oct. 19) in an encounter that could help scientists better understand how the solar system came to be.
17 October 2014, 05:27 PM ET
ESA officials are asking the public to come up with a better name for the spot on Comet 67P/Churyumov-Gerasimenko where the Rosetta mission will drop a lander during a historic, unprecedented maneuver on Nov. 12.
17 October 2014, 04:31 PM ET
NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, has selected proposals from 10 universities to begin investigating the possible use of cubesats as auxiliary components to missions to Europa and beyond.
17 October 2014, 11:03 AM ET
A spacecraft exploring the Saturn system was zapped by static electricity sent out one of the ringed wonder's many moons in 2005, a new study suggests.
17 October 2014, 08:00 AM ET
See news, images and videos about comets, icy wanderers in the solar system.