Science & Astronomy Archive
06 March 2015, 04:01 PM ET
Researchers scanning the atmospheres of exoplanets for gases produced by living creatures should hunt for more than just oxygen, methane and other "biosignatures" that swirl about in Earth's air, MIT's Sara Seager says.
06 March 2015, 10:00 AM ET
NASA's Dawn probe arrived at Ceres today (March 6) at 7:20 a.m. EST, becoming the first spacecraft ever to orbit a dwarf planet, and the first ever to orbit two celestial bodies beyond the Earth-moon system.
06 March 2015, 07:30 AM ET
The UN formally dissolved its Action Team 14, in recognition of the group's successful completion of its mandate to coordinate international mitigation efforts for near-Earth object (NEO) threats.
05 March 2015, 06:14 PM ET
An observatory will celebrate the planned arrival of a NASA spacecraft at Ceres by streaming live images of the dwarf planet live online Friday (March 6).
05 March 2015, 06:00 PM ET
NASA's Dawn spacecraft is getting humanity's best view yet of the tiny survivor from the solar system's earliest days. See what we know about the dwarf planet Ceres in this our infographic.
05 March 2015, 06:00 PM ET
On Friday (March 6), NASA's Dawn spacecraft will slip into orbit around the dwarf planet Ceres. It's been a long journey for the probe and for the team of scientists and engineers assigned to the mission.
05 March 2015, 05:30 PM ET
See amazing images of the night sky and cosmos in SPACE.com's gallery of cosmic images posted in February 2015.
05 March 2015, 04:20 PM ET
Astronomers using the Hubble Space Telescope snapped  a cross-shaped pattern of 4 images of the same supernova. The images were discovered "around a giant foreground elliptical galaxy embedded in a cluster of galaxies."
05 March 2015, 02:01 PM ET
The fastest-known star in the Milky Way is on a path out of the galaxy, and new research suggests it was a supernova that gave it the boot.
05 March 2015, 02:01 PM ET
Albert Einstein's General Theory of Relativity celebrates its 100th anniversary in 2015. See the basic facts of Einstein's relativity in our infographic here.
05 March 2015, 02:01 PM ET
The famous theory, which Einstein published in 1915, remains the bedrock upon which scientists' understanding of the origin and evolution of the universe rests.
05 March 2015, 02:01 PM ET
Ancient Mars likely once had an ocean large enough to cover 20 percent of the Martian surface, a fifth of the planet, scientists say. But over time, most of that water was lost to space.
05 March 2015, 02:01 PM ET
For the first time, a cosmic magnifying glass has allowed scientists to see the same star explosion four times, possibly offering a revealing glimpse into these explosive stellar deaths and the nature of the accelerating universe.
05 March 2015, 12:09 PM ET
New research reveals that a compact helium star that's traveling out of the Milky Way galaxy was once donating its mass as part of a type Ia supernova pair. The spin of the star increased dramatically over time leading to its eventual ejection.
05 March 2015, 12:01 PM ET
About 4.5 billion years ago, the Red Planet was a much wetter place. New isotopic measurements of Mars by several ground-based telescopes on Earth reveal a new map of where the water laid and a model of water loss over time can be constructed.
05 March 2015, 07:18 AM ET
While NASA's Dawn probe will soon begin the first in-depth examination of Ceres, astronomers have learned a bit about the dwarf planet already. Here are seven weird facts about Ceres.
05 March 2015, 07:00 AM ET
A remote galaxy observed when the universe was less than a billion years old is more evolved than scientists expected.
05 March 2015, 07:00 AM ET
The European Space Agency's Rosetta spacecraft took the picture during a close flyby of Comet 67P/Churyumov-Gerasimenko on Feb. 14, when the sun, spacecraft and comet were all neatly aligned.
04 March 2015, 05:50 PM ET
Europe's Rosetta spacecraft recently beamed back an amazing photo of its comet taken during a risky, close flyby of the dusty cosmic body.
04 March 2015, 12:30 PM ET
Dark matter may be one of the greatest mysteries of the universe, but it could help solve a puzzle about the sun that has been baffling scientists for years, researchers say.
04 March 2015, 12:30 PM ET
Astronomers have watched a pulsar some 25,000 light-years from Earth slip from view, swallowed by a companion star's warp in the fabric of space-time. This wacky effect is one more example that proves Einstein's general theory of relativity.
04 March 2015, 07:22 AM ET
The car-size Curiosity rover suffered a "transient short circuit" on Feb. 27 while it was transferring sample powder from its robotic arm to instruments on the robot's body, NASA officials said.
04 March 2015, 07:00 AM ET
The Dawn mission's unprecedented deep-space feats are enabled by the probe's innovative propulsion system, which is about 10 times more efficient than traditional chemical thrusters, NASA officials say.
03 March 2015, 04:24 PM ET
Tech giant Google will give $1 million to Lick Observatory, a University of California, Berkeley facility that has been battling for funds since 2013, the observatory announced today (Feb. 10).
03 March 2015, 03:00 PM ET
Two stars, each more massive than our Sun but orbiting 100 times closer, affect each others gravity wells allowing astronomers to gauge space-time itself.
03 March 2015, 01:10 PM ET
A network of amateur astronomers is responsible for identifying a truly mysterious phenomenon on the surface of Mars: a plume reaching so high above the surface of the Red Planet that it was visible from Earth.
03 March 2015, 12:45 PM ET
Jupiter's moon Europa suffers from extreme cold and deadly radiation, but its astronomical and geological sights are unique in the solar system.
03 March 2015, 12:00 PM ET
Scientists believe conditions may be right for life, under Europa's icy crust.
03 March 2015, 11:24 AM ET
Our civilization—and presumably any civilization with a technological capacity at least as advanced as ours—runs on energy and raw materials.
03 March 2015, 10:39 AM ET
Galaxy cluster Abel 1689 is so massive, light bends around it in an effect predicted by Einstein called a gravitational lens, revealing Galaxy A1689-zD1 to be surprisingly mature despite the young age of the universe seen.
03 March 2015, 08:47 AM ET
Scientists have found an early galaxy that produces more stars in a single day than the Milky Way creates in a year.
03 March 2015, 07:45 AM ET
NASA's Dawn will investigate Ceres' bright spots and other mysteries after it enters orbit around the dwarf planet at about 7:20 a.m. EST (1220 GMT) on Friday (March 6).