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20 October 2014, 03:54 PM ET
NASA engineers, researchers from Brigham Young University and origami expert Robert Lang are developing origami-inspired solar panel arrays that fold and unfold.
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, 02:23 PM ET
If you step outside before dawn during the next week or so, you might be able to see bright meteors streaking through the sky.
20 October 2014, 02:19 PM ET
NASA will host a live webcast of the Orionid meteor shower starting tonight (Oct. 20) at 10 p.m. EDT (0200 Oct. 21 GMT). Watch it live here.
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, 06:01 AM ET
Nearly all of North America will experience the solar eclipse. People who live east of a line running from roughly Quebec City to Montauk Point, New York, will miss out, since the sun will set before the dark disc of the moon begins to encroach upon it.
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, 03:41 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.
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.
18 October 2014, 02:01 AM ET
See photos of the third mission flown by the US Air Force's secret space plane, the X-37B.
18 October 2014, 12:38 AM ET
The U.S. Air Force landed its mysterious X-37B space plane at Vandenberg Air Force Base in California on Oct. 17, 2014. See photos of the X-37B spacecraft's landing here.
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, 04:27 PM ET
The private spaceflight company Virgin Galactic will soon begin a new round of rocket-powered test flights of the commercial spaceliner SpaceShipTwo to prepare for eventual passenger flights to space.
17 October 2014, 02:18 PM ET
The X-37B touched down at California's Vandenberg Air Force Base on Friday (Oct. 17), ending a space mission that kicked off in December 2012 and saw the unmanned vehicle circle Earth for an unprecedented 675 days.
17 October 2014, 12:56 PM ET
Jupiter and the moon are set to meet up in the early morning sky on Saturday (Oct. 18).
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.
17 October 2014, 07:43 AM ET
See NASA scientists discuss the flyby of Comet Siding Spring past Mars during live interviews today (Oct. 17) from 6 a.m. EDT to 11:30 a.m. EDT.
17 October 2014, 07:38 AM ET
In a rare celestial event, a comet will pass closer to Mars than the moon is from Earth on Oct. 19, 2014. See how the Comet Siding Spring flyby of Mars works in this Space.com infographic.
17 October 2014, 07:30 AM ET
Forty-six years ago this week, NASA's first Apollo astronauts to launch into space were circling the Earth, just as the crew's mission patch depicted. The official insignia though, was not what the crew initially envisioned as representing their flight.
17 October 2014, 07:30 AM ET
Comet Siding Spring will zoom within 87,000 miles of Mars at 2:27 p.m. EDT on Sunday (Oct. 19). Scientists will observe the flyby using the fleet of spacecraft already at Mars, studying the comet and any effects its dust has on the planet's atmosphere.
17 October 2014, 03:02 AM ET
An Ariane 5 launcher fired into space Thursday (Oct. 16) from French Guiana, hauling two commercial satellites destined to broadcast television to Latin America for Intelsat, DirecTV and Argentina's national telecom company.
16 October 2014, 07:00 PM ET
Comet Siding Spring C/2013 A1 will fly within 87,000 miles of the surface of the Red Planet, causing NASA to alter the positions of their satellite fleet to evade the debris.
16 October 2014, 03:45 PM ET
Sierra Nevada Corp. filed suit in federal court Oct. 15, seeking to overturn a NASA decision to lift a stop-work order on contracts it awarded to Boeing and SpaceX.
16 October 2014, 03:06 PM ET
Experts will debate whether or not life is likely to exist on planets orbiting red dwarf stars during a live event tonight. Watch it here at Space.com.
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.
16 October 2014, 02:10 PM ET
There's something strange going on below the surface of Saturn's Death Star-looking moon Mimas, a new study suggests.
16 October 2014, 02:03 PM ET
Instruments aboard NASA's Interface Region Imaging Spectrograph (IRIS) spacecraft have delivered imagery of super heated plasma and jets in a hard-to-study region of the Sun's atmosphere.