Comet Siding Spring's Rare Mars Flyby: Full Coverage
October 17th, 2014
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.
Read More » Comet Will Buzz Mars Sunday: How to See It in Telescopes
October 15th, 2014
A comet is on course for a super-close approach with the planet Mars this Sunday (Oct. 19) in a rare celestial encounter. If you have a moderate-size telescope, you might be able to spot the icy wanderer as it nears the Red Planet, weather permitting.
Read More » Rosetta Spacecraft's Comet Target: 5 Strange Facts
September 22nd, 2014
A probe flying through deep space has been beaming back amazing photos and information about its target comet since arriving at the cosmic body in August.
Read More » The Comet Jacques (C/2014 E2) in Photos: A Stargazing Gallery
September 5th, 2014
Comet Jacques (C/2014 E2) made its closest approach to Earth on Aug. 28, 2014. It is bright enough to be visible in small telescopes and binoculars. See amazing photos of Comet Jacques as seen by stargazers in this Space.com gallery.
Read More » European Probe Has 5 Potential Drop Zones for Historic Comet Landing
August 25th, 2014
A robotic space probe is due to set down on a comet in November, and now scientists have identified five sites where it could land.
Read More » Comet Makes Spectacular Galactic Flyby (Video)
July 8th, 2014
A NASA probe recently spotted the dazzling Pan-STARRS comet as it hurtled through space against the backdrop of a distant galaxy.
Read More » New Meteor Shower from Comet Could Dazzle Stargazers Next Week
May 12th, 2014
A new meteor shower spawned by a comet is due to light up the sky next week, with some forecasters predicting up to 200 'shooting stars' per hour, a potentially spectacular opening act for the meteor display.
Read More » Rosetta's Brightening Comet Emerges From Behind the Sun
March 12th, 2014
Comet 67P/Churyumov–Gerasimenko, the icy target of Europe's Rosetta spacecraft and Philae lander, has been spotted by the Very Large Telescope in Chile. It is the first sighting of the comet since October 2013.
Read More » How the Rosetta Spacecraft Will Land on a Comet (Infographic)
January 17th, 2014
The two-part Rosetta spacecraft is designed to orbit and land on a comet. See how it will orbit and land on the Comet 67P/Churyumov-Gerasimenko in November 2014.
Read More » Comet Lovejoy Streaks Across Night Sky in Spectacular Amateur Photos
December 13th, 2013
Stargazer John Chumack snapped two beautiful images of Comet Lovejoy and shared them with SPACE.com. See them here.
Read More » Amazing Photos: Comet Lovejoy C/2013 R1 Spotted by Stargazers
December 6th, 2013
Comet Lovejoy is putting on a show for sky watchers in 2013.
Read More » Comet ISON's Thursday Sun Encounter a Thanksgiving Feast for NASA
November 27th, 2013
The icy Comet ISON from the depths of deep space will either meet its doom or transform into a cosmic spectacle when it whips around the sun Thursday (Nov. 28) in a Thanksgiving Day treat for NASA and scientists around the world.
Read More » Comet's Close Encounter with Mars Explained (Infographic)
October 17th, 2014
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.
Read More » Amazing Selfie with Comet Snapped by European Spacecraft (Photo)
October 15th, 2014
With an icy comet lurking just over its shoulder, a far-flung European spacecraft snapped a selfie in outer space.
Read More » Rosetta Spacecraft Snaps Amazing Selfie with Comet Pal (Photo)
September 11th, 2014
Selfies can even be taken in deep space. The European Space Agency's comet-chasing Rosetta probe's Philae lander snapped a stunning photo of the spacecraft and its target comet, 67P/Churyumov–Gerasimenko.
Read More » Newfound Comet Visible in Binoculars and Telescopes: How to See It
September 5th, 2014
Once every year or two, a comet appears in the sky that is bright enough to be seen with a small telescope or binoculars. Right now, observers anywhere in the Northern Hemisphere can see such a comet.
Read More » Rosetta Spacecraft Snaps Amazing 3D View of Comet (Photos, Video)
August 15th, 2014
Break out your red and blue 3D glasses. It's time to examine the nooks and crannies of a comet in three dimensions.
Read More » Comet's October Mars Flyby Won't Endanger Red Planet Probes
June 20th, 2014
A comet's close brush with Mars later this year shouldn't threaten the spacecraft circling the Red Planet, researchers say.
Read More » Mars-Bound Comet: Photos of Comet C/2013 A1 Siding Spring (Gallery)
March 27th, 2014
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.
Read More » February Stargazing: Planets, Comets and Constellations Shine in Night Sky
February 8th, 2014
Skywatchers have a lot to look up for in February 2014. Weather permitting, diligent observers should be able to spot a plethora of planets, comets and stars in the night sky this month.
Read More » 6 Biggest Space Science Discoveries of 2013
December 28th, 2013
From extrasolar planets to extraterrestrial neutrinos, these scientific findings have made sure that 2013 has been an unforgettable year.
Read More » Europe Launches Wake-Up Call Contest for Comet-bound Spacecraft
December 11th, 2013
In the chilly reaches of deep space, the unmanned Rosetta probe will soon awaken from a years-long hibernation for a 2014 comet rendezvous, and the European scientists want you to help wake the slumbering spacecraft.
Read More » Comet ISON Gets Roasted by Sun and Vanishes, But Did It Survive?
November 29th, 2013
Call it a cosmic holiday miracle. The much-anticipated Comet ISON appeared to disintegrate during its Thanksgiving Day slingshot around the sun Thursday, but something — it seems — may have survived.
Read More » Comet ISON Nears Sun for Thanksgiving Encounter in NASA Video
November 26th, 2013
A NASA spacecraft has captured its best video yet of the icy Comet ISON streaking toward a Thanksgiving Day encounter with a sun, a cosmic encounter the comet might just not survive.
Read More » Comet's Mars Flyby Sunday Has Scientists Abuzz
October 17th, 2014
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.
Read More » Water On the Moon Came from Solar Wind
October 8th, 2014
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.
Read More » Weird Comet Is Darker Than Charcoal
September 8th, 2014
Instead of arriving at a bright, reflective, ice-covered heavenly body, the European Space Agency's Rosetta probe found that its target comet, 67P/Churyumov-Gerasimenko, appears darker than charcoal in some wavelengths of light.
Read More » Whoops! So-Called 'Asteroid' Is Actually a Comet
September 4th, 2014
A previously unknown asteroid spotted by a NASA telescope with a new lease on life is actually a comet, according to new observations.
Read More » Comet Shoemaker-Levy 9's Epic Crash with Jupiter in Pictures
July 18th, 2014
Fragments of Comet Shoemaker-Levy 9 struck planet Jupiter in July 1994.
Read More » Camelopardalid Meteor Shower Photos: 'Shooting Stars' from Comet 209P/LINEAR (Gallery)
May 24th, 2014
The new Camelopardalid meteor shower caused by Comet 209P/LINEAR gave stargazers a treat overnight on May 23 and 24, 2014. See photos of the rare Camelopardalid meteor shower by stargazers in this Space.com gallery.
Read More » Capturing Halley's Comet: An Astronomy Tale
March 22nd, 2014
Capturing the world's most famous comet from the Florida Keys, Victor Rogus was inspired for a lifetime of astronomy.
Read More » Meteor Shower Cameras Scan Night Sky to Study Near-Earth Objects
February 6th, 2014
At Mount Hamilton, on Fremont Peak and in Sunnyvale, Calif., three sets of mechanical eyes watch the heavens for tiny streaks of light. The cameras are part of a project to monitor the night sky for meteors.
Read More » Comet-Hunting Probe to Awaken, Zero In On Target
December 26th, 2013
Europe's Rosetta spacecraft is due to receive a wake-up call in January, ending its hibernation in preparation for an unprecedented mission to not only put itself into orbit around a comet, but also send a lander to the comet's body.
Read More » Looks Like a Comet But Feels Like an Asteroid? That's Wild! (Op-Ed)
December 9th, 2013
Scientists had always characterized comets and asteroids as completely different before NASA's Stardust Mission.
Read More » Comet of the Century? Sun-Grazing Comet ISON Explained (Infographic)
November 27th, 2013
Comet ISON could become a spectacular night sky object in November 2013. Find out why here.
Read More » Could Incoming Comet ISON Lose Its Tail to a Thanksgiving Sun Storm?
November 26th, 2013
Experts with NASA say another comet's tail-clipping encounter with the sun in 2007 presents a forbidding example of what could happen to Comet ISON.
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