28 February 2014, 03:06 PM ET
The discovery of tiny balls and tunnels inside a Martian meteorite has rekindled the debate over whether the Red Planet was teeming with primitive life millions of years ago.
28 February 2014, 01:40 PM ET
New images from space reveal the storms that are bringing much needed rains to California. Though the storms will help, they won't make much of a dent in the historic drought.
28 February 2014, 12:21 PM ET
Though a glitch ended Kepler's original operations last May, the mission continues to discover distant worlds, adding a whopping 715 new exoplanets to the tally on Wednesday. Many more will follow, and a new mission could keep Kepler busy for years.
28 February 2014, 12:07 PM ET
NASA's Mars rover Curiosity has taken some dazzling new photos of the Red Planet landscape, showing in sharp detail where it's been and the long road ahead, which leads to the base of a 3.4-mile-high mountain.
28 February 2014, 11:22 AM ET
Black holes can blast their surroundings with much stronger winds than previously thought, scientists say. The discovery will help better model the evolution of black holes over time, and help uncover the huge influence they can have on host galaxies.
28 February 2014, 11:07 AM ET
ATV Albert Einstein backs away from the International Space Station shortly after undocking at 09:55 CET (08:55 UT) on Oct. 28, 2013, as seen in this space wallpaper.
27 February 2014, 02:22 PM ET
The Global Precipitation Measurement (GPM) Core Observatory, a joint effort between NASA and the Japan Aerospace Exploration Agency, blasted off aboard an H-2A rocket from Japan's Tanegashima Space Center today at 1:37 p.m. EST.
27 February 2014, 09:32 AM ET
This detailed space wallpaper shows the central parts of the nearby active galaxy NGC 1433. The dim blue background image, showing the central dust lanes of this galaxy, comes from the NASA/ESA Hubble Space Telescope.
27 February 2014, 09:27 AM ET
A potentially deadly spacesuit water leak that nearly drowned an Italian astronaut during a spacewalk last July was one of the scariest close calls in NASA's spacewalk history. In fact, the spacesuit also leaked during an earlier spacewalk.
26 February 2014, 05:26 PM ET
NASA has confirmed the existence of 715 newly discovered alien planets using the agency's Kepler Space Telescope, effectively doubling the number of exoplanets known today. See what the discovery means for life here.
26 February 2014, 02:19 PM ET
A recent image from the International Space Station (ISS) shows in stark detail the utter lack of development in North Korea — widely considered to be a "rogue" state — compared to next-door neighbor South Korea, a rapidly developing industrial power.
26 February 2014, 09:33 AM ET
A team of scientists says that microscopic tunnels and carbon-rich spherules that stud the interior of a Martian meteorite known as Yamato 000593 may have been formed by Red Planet organisms long ago, NBC News reported today (Feb. 25).
26 February 2014, 09:26 AM ET
NASA watched as a large, peanut-shaped asteroid flew past Earth in early February, and you can see the impressive images in a new video released by the space agency.
25 February 2014, 02:51 PM ET
Water vapor has been detected in the atmosphere of one of the first alien planets ever identified by astronomers, scientists announced.
25 February 2014, 11:58 AM ET
The ghostly Boomerang Nebula, called the 'coldest place in the universe,' reveals its true shape in this amazing space wallpaper from the giant ALMA radio telescope.
25 February 2014, 11:50 AM ET
The sun erupted with a major solar flare on Tuesday (Feb. 25), an X4.9 solar flare that is the biggest sun storms of the year. See how a familiar sunspot triggered the massive solar storm here.
25 February 2014, 11:26 AM ET
A tiny spacecraft with its gaze trained on the sun has observed the strongest solar flare since it launched into orbit last summer, NASA announced.
25 February 2014, 11:21 AM ET
The space agency will announce more discoveries by Kepler, whose original planet-hunting mission was scuttled by a glitch in May 2013, during a press conference at 1 p.m. EST on Wednesday (Feb. 26).
25 February 2014, 10:59 AM ET
A boulder-sized space rock slammed into the lunar surface last year, sparking the brightest explosion on the moon ever seen, scientists say.
25 February 2014, 10:35 AM ET
The planned Museum of Science Fiction will be partnering with the Science Channel to provide sponsorship and content for the new venture, the museum announced today (Feb. 25).
25 February 2014, 12:35 AM ET
Will telemedicine work on Mars?
24 February 2014, 01:46 PM ET
A magnetic filament of solar material erupted on the sun in late September, breaking the quiet conditions in a spectacular fashion as seen in this amazing space wallpaper — dubbed a “canyon of fire” by NASA officials.
24 February 2014, 11:43 AM ET
Inpouring rivers of hydrogen gas could explain how spiral galaxies maintain the constant star formation that dominates their hearts. Scientists observed a tenuous filament of gas streaming into the galaxy NGC 6946, known as the Fireworks Galaxy.
24 February 2014, 11:32 AM ET
After decades of wondering why young massive stars don't blow away the gas surrounding them, astronomers have finally found a process that explains how these youngsters hang on to their gassy envelopes.
21 February 2014, 02:06 PM ET
A deep freeze has settled in over the Great Lakes this winter and a new image released by NASA shows the astonishing extent of the ice cover as seen from space.
21 February 2014, 09:53 AM ET
This stunning space wallpaper is a false-color mosaic, made from infrared data collected by NASA's Cassini spacecraft. It reveals the differences in the composition of surface materials around hydrocarbon lakes at Titan, Saturn's largest moon.
21 February 2014, 09:35 AM ET
The maneuver was designed to test out a strategy for reducing wear on the robot's six metal wheels, which have accumulated dings and holes at an increasing rate over the last few months, NASA officials said.
21 February 2014, 03:17 AM ET
You don't have to grind your own lenses to build your own telescope.
20 February 2014, 06:37 PM ET
New photos of the Martian landscape further rule out a meteorite impact as the culprit behind the "jelly doughnut" rock that mysteriously appeared in front of one of NASA's Mars rovers last month.
20 February 2014, 10:09 AM ET
Officials with the Slooh Space Camera are urging the public to help find the asteroid 2000 EM26, which hasn't been seen since March 14, 2000, just nine days after its discovery.
20 February 2014, 10:03 AM ET
The European Space Agency has selected a space telescope called PLATO — short for Planetary Transits and Oscillations of stars — as its third medium-class science mission. The observatory is slated to blast off in 2024.
19 February 2014, 02:47 PM ET
The devastating, explosive deaths of stars appear to be lopsided cosmic conflagrations, scientists say. The new findings may be a clue into what exactly happens in the hearts of stars as they explode as supernovas.