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13 November 2014, 04:03 PM ET
: Late autumn is an excellent time to observe four of the most variable stars in the sky: Mira, Algol, and Delta Cephei. As their name suggests, variable stars are ones that, for one reason or another, varies in brightness over time.
13 November 2014, 11:41 AM ET
The European Space Agency's Philae lander bounced not once but twice before completing its historic comet landing on Nov. 12, 2014. See the first photos from Comet 67P's surface and a status update on the Rosetta mission.
13 November 2014, 11:10 AM ET
A soft landing on the surface of comet 67P/C-G was successfully completed on Nov. 12th, 2014. The Philae lander and its mothership Rosetta probe both snapped imagery of the descent.
13 November 2014, 09:00 AM ET
The origins of organic matter found by Mars lander missions have long been debated, but a new study suggests a way to find out whether these chemicals of life came from the Red Planet or elsewhere.
13 November 2014, 07:00 AM ET
Europe's Philae lander is already gathering a wealth of data about Comet 67P/Churyumov-Gerasimenko after touching down on the icy object Wednesday morning (Nov. 12).
12 November 2014, 10:38 PM ET
The Big Dipper is an asterism in the constellation Ursa Major. The familiar group of stars serves as a pointer to other locations in the sky.
12 November 2014, 08:20 PM ET
Lick Observatory, in operation since 1888, is involved in the search for planets outside the solar system.
12 November 2014, 04:27 PM ET
Europe's Philae lander made history Wednesday, touching down on Comet 67P/Churyumov-Gerasimenko. But the probe's anchoring harpoons didn't fire as planned, and Philae may have bounced off the surface before settling back again.
12 November 2014, 04:20 PM ET
During a nail-biting drop onto the surface of a comet, the European Space Agency's Philae spacecraft snapped a stunning photo of its icy target. See the close up view of Comet 67P/Churyumov–Gerasimenko.
12 November 2014, 04:08 PM ET
Scientists and space fans aren't the only ones excited by the unprecedented comet landing performed by the European Space Agency today (Nov. 12). The folks behind Google's whimsical doodles are joining the celebration, too.
12 November 2014, 02:44 PM ET
Investigators have talked to the pilot who survived the tragic crash of Virgin Galactic's SpaceShipTwo last month, and say that he didn't know that his copilot unlocked the space plane's re-entry system early.
12 November 2014, 01:25 PM ET
NASA's first space-bound Orion capsule has arrived at the launch pad, where it will lift off on an uncrewed test flight in support of the space agency's plans for future astronaut missions beyond Earth orbit.
12 November 2014, 12:32 PM ET
The mysterious dark matter that makes up most of the matter in the universe may behave more like wavy fluids than solid particles, helping to explain the shapes of galaxies, a new study suggests.
12 November 2014, 11:46 AM ET
The European Space Agency's Rosetta mission's lander successfully landed on the surface of comet 67P/C-G on Nov. 11, 2014. ESA's mission control erupts in celebration on landing confirmation.
12 November 2014, 11:13 AM ET
For the first time in history, a spacecraft built on Earth has softly landed on the face of a comet speeding through deep space.
12 November 2014, 10:30 AM ET
To make the stunning visuals of 'Interstellar' in IMAX, director Christopher Nolan sought inspiration from real-life IMAX space documentaries. See him talk with IMAX space documentary filmmaker Toni Myers here.
12 November 2014, 10:29 AM ET
The European Space Agency's Rosetta mission released the Philae lander on Nov. 12th, 2014. It was due to land on Comet 67P/C-G seven hours later.
12 November 2014, 09:40 AM ET
A European spacecraft is attempting to make history by landing on a comet in deep space, and amazing new photos show the daring endeavor in action.
12 November 2014, 09:19 AM ET
The space agency is a "junior partner" int he European Space Agency's Rosetta mission and has contributed 3 instruments to the 'mothership'. They have also delivered telemetry on the probe.
12 November 2014, 07:10 AM ET
After a nail-biting silence, European scientists are back in touch with a probe currently descending to the face of a comet speeding through deep space.
12 November 2014, 04:03 AM ET
If all went according to plan, the European Space Agency's Philae lander separated from its Rosetta mothership at 3:35 a.m. EST Wednesday, beginning a long, slow journey down to the surface of Comet 67P/Churyumov-Gerasimenko.
11 November 2014, 10:28 PM ET
This space wallpaper shows how the effect of gravitational lensing around a normal galaxy focuses the light coming from a very distant star-forming galaxy merger to created a distorted, but brighter view.
11 November 2014, 07:05 PM ET
Planetary Ventures LLC will lease Moffett Federal Airfield (MFA), which is currently managed by NASA's Ames Research Center, and restore the facility's historic Hangar One, a huge building that has been a Silicon Valley landmark since the 1930s.
11 November 2014, 06:56 PM ET
Scientists have picked up on the mysterious "song" of a comet speeding through deep space.
11 November 2014, 04:31 PM ET
The European Rosetta spacecraft's Philae lander aims to be the first probe ever to safely land on a comet. Here's how to land on a spinning ice mountain in space.
11 November 2014, 02:16 PM ET
Scientists on Earth are hoping to land a probe on the face of a comet for the first time Wednesday (Nov. 12), and they are now one step closer to accomplishing that goal.
11 November 2014, 01:14 PM ET
The Rosetta probe's Philae Lander will attempt a soft-landing on comet 67P/C-G on Nov. 11th, 2014. It will take the lander a few hours to reach the surface after it is deployed.
11 November 2014, 12:19 PM ET
A humongous sunspot — the biggest one seen since 1990 — has so far produced no aurora-causing events, despite sending off 10 huge solar flares in less than two weeks.
11 November 2014, 11:46 AM ET
Comet 67P/C-G is humming. ESA’s Rosetta probe detected cyclical changes in the comet’s magnetic field environment. To make the comet’s magnetic ‘song’ audible to people, researchers sped up the data 10,000 times its actual rate.
11 November 2014, 10:34 AM ET
Supernova 1987A remnant’s appearance has baffled astronomers for decades. One side is brighter than the other.
11 November 2014, 07:46 AM ET
Get up early or stay out late to see some of the brightest planets in the night sky this month. The elusive planet Mercury begins November with its best morning apparition for 2014.
11 November 2014, 07:21 AM ET
A European probe is expected to make an audacious landing on the face of a comet tomorrow (Nov. 12), and you can follow it live online starting today (Nov. 11).