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03 April 2015, 07:00 AM ET
NASA's Hubble Space Telescope has photographed a number of gas clouds that glow a ghostly green, thanks to radiation blasted out by superpowerful quasars. See the photos in this Hubble photo gallery.
03 April 2015, 07:00 AM ET
The eight objects betray the past presence of quasars, the most luminous objects in the universe, whose powerful beams of radiation lend the clouds their ethereal glow, researchers said.
03 April 2015, 07:00 AM ET
Scientists are still trying to understand what causes Mars' myriad dark streaks, and what these features might mean for the possible existence of Red Planet life.
03 April 2015, 07:00 AM ET
Here's how to see the total lunar eclipse early Saturday morning. The farther west one goes in North America, the better the view, because "moonset" will be approaching as the eclipse begins.
02 April 2015, 05:50 PM ET
Skywatchers around the world can look forward to spotting bright planets throughout April; observers just need to know where to look.
02 April 2015, 05:09 PM ET
A few years ago, Patricia Tribe was cooking spaghetti and contemplating a tough question: How do you keep science in schools while still making enough time for literacy?
02 April 2015, 04:11 PM ET
The Planetary Society — a nongovernmental space advocacy organization — has announced its support of a plan to send humans into orbit around Mars' moon Phobos by 2033 and to the surface of the Red Planet by 2039.
02 April 2015, 03:01 PM ET
Have you ever wondered what it would be like to live on the moon? What about Mars, or Venus or Mercury? We sure have and that's why we decided to find out what it might be like to live on other worlds in our solar system, from Mercury to Pluto and beyond
02 April 2015, 11:50 AM ET
You're not seeing double; these are two images of the same world: icy, cratered Rhea, the second-largest natural satellite of Saturn.
02 April 2015, 07:04 AM ET
The awards set up NASA partnerships with 10 aerospace companies and one public university to develop tech in three different areas: advanced electric propulsion, human habitation and small satellites.
02 April 2015, 07:00 AM ET
The close orbit of NASA's MESSENGER spacecraft provides a world of detail about features on the rocky planet Mercury.
02 April 2015, 07:00 AM ET
While so many space companies are focused on building rockets and spacecraft, could there room for a little style in orbit?
02 April 2015, 07:00 AM ET
The rocks, which lie at a site dubbed Garden City near the base of the 3.4-mile-high (5.5 kilometers) Mount Sharp, harbor ridges up to 2.5 inches (6 centimeters) tall that are composed of bright and dark mineral veins.
01 April 2015, 11:57 PM ET
The astronauts living and working on the International Space Station are eye to eye with a deadly super typhoon as it heads toward the Philippines.
01 April 2015, 06:00 PM ET
Lunar lava tubes may be large enough to house whole cities of future colonists, scientists say.
01 April 2015, 05:27 PM ET
NASA's Osiris-Rex mission has passed a crucial milestone, moving from the design and development phase to the spacecraft-building stage, agency officials announced Monday (March 31).
01 April 2015, 04:47 PM ET
A new program will search for hard-to-spot gravitational waves by looking at how they distort the signals of fast-spinning millisecond pulsars.
01 April 2015, 03:11 PM ET
The orbiting Global Precipitation Measurement (GPM) Constellation quantifies precipitation across the entire Earth. Data 'swaths' from 10 satellites overlay to form NASA's animated Integrated Multi-satellite Retrievals for GPM (IMERG).
01 April 2015, 01:54 PM ET
Material falling onto a growing gas giant's core may provide the push needed to keep the planet from spiraling into its star. The discovery could solve the 30-year mystery of how distant gas giants, such as Jupiter, survive their formation period.
01 April 2015, 12:13 PM ET
A privately built spacecraft shaped like a space shuttle could land at a conventional airport, according to its builder, the Sierra Nevada Corporation.
01 April 2015, 10:52 AM ET
In the 2015 Space Apps Challenge (April 10-12), engineers, artists, entrepreneurs and others collaborate to find solutions to world challenges. NASA astronaut Cady Coleman explains.
01 April 2015, 09:37 AM ET
Wheeler Historical Museum in Wheeler, Texas, unveiled a statue dedicated to moonwalker Alan Bean.
01 April 2015, 08:00 AM ET
Ancient Mars may have featured oceans with huge, slow-moving waves. Studying the shorelines these waves may have carved could shed light on the ancient Martian climate, such as whether or not it had seas long enough for life to potentially develop.
01 April 2015, 07:06 AM ET
Engineers subjected the saucer-shaped Low-Density Supersonic Decelerator (LDSD) test vehicle, which is part of a project designed to help get heavy payloads down safely on Mars, to a "spin table" test at NASA's Jet Propulsion Laboratory Tuesday.
01 April 2015, 07:00 AM ET
The scars inflicted during the Curiosity rover mission's 2012 landing faded steadily for about two years, but the pace slackened thereafter, and some appear even to be darkening again, researchers said.
01 April 2015, 07:00 AM ET
Skywatchers in Asia and Australia will see the lunar eclipse Friday evening (April 3) after sunset, while observers in North and South America will see it Saturday morning (April 4) just before sunrise.
01 April 2015, 12:00 AM ET
See amazing images of the night sky and cosmos in SPACE.com's gallery of cosmic images posted in March 2015.
31 March 2015, 05:45 PM ET
Only the speediest of skywatchers will have a chance to see the total lunar eclipse rising Saturday (April 4): NASA predicts that the total phase of the lunar eclipse will only last about 5 minutes.
31 March 2015, 05:04 PM ET
The Mars Science Laboratory and components of the delivery spacecraft whence it came have been spied by the Mars Reconnaissance Orbiter on several occasions since in August 2012.
31 March 2015, 04:49 PM ET
There used to be nine planets. Now there are eight. Whichever you prefer, here is a list of them in the order they appear in the solar system.
31 March 2015, 03:30 PM ET
It is called NIROSETI for near-infrared optical SETI. This new instrument can record levels of light over time so that patterns can be analyzed and assessed for potential signs of other civilizations.
31 March 2015, 01:20 PM ET
In the early morning hours of April 4th 2015, a total lunar eclipse will be visible from many parts of the world. But why will the moon appear dark red? Science@NASA explains.