02 January 2015, 01:57 PM ET
The 'Zero Gravity Day' hoax currently spreading on the Internet was actually an April Fools' Day joke told in 1976.
02 January 2015, 07:00 AM ET
A recent Search for Extraterrestrial Intelligence (SETI) effort studied 86 candidates in the Kepler space observatory's field for radio signals that could potentially indicate the presence of an intelligent civilization.
02 January 2015, 07:00 AM ET
How habitable was Mars in the past, and does it have signs of life? This is part of what Mars 2020, a successor to Curiosity, will examine when it arrives on Mars.
01 January 2015, 12:00 AM ET
See amazing images of the night sky and cosmos in Space.com's gallery of cosmic images posted in December 2014.
31 December 2014, 12:22 PM ET
'Interstellar' star Jessica Chastain isn't content to explore the universe just on the silver screen. The actress appears in a new NASA video hailing the agency's efforts in space science and exploration.
31 December 2014, 10:40 AM ET
Problems with NASA's Mars Exploration Rover Opportunity's flash memory have intensified over recent weeks, so Discovery News Space Producer Ian O'Neill spoke with NASA Project Manager John Callas about the severity of the glitches.
31 December 2014, 07:00 AM ET
Researchers suggest that photosynthesis could take place on an alien planet with a bizarre orbit like Mercury's, potentially helping support complex life.
30 December 2014, 04:07 PM ET
The Martian surface is covered with a diverse array of landscapes and features, but this is one of the weirdest: strange spider-like formations that cover the south polar region of Mars.
30 December 2014, 01:36 PM ET
A mystery object at the center of the galaxy has astronomers scratching their heads, and a new piece of information won't be solving the case before the New Year.
30 December 2014, 12:22 PM ET
Tiny CubeSats could soon play a big role in space exploration. For example, one of these miniature satellites — NASA's 'IceCube' craft — is set to blast off in 2016 to test technology for a future mission.
30 December 2014, 07:02 AM ET
Rocky, close-orbiting exoplanets may be stretched out by their parent stars' gravity, researchers say. Such worlds would be extremely hot and and likely inhospitable to life.
30 December 2014, 07:00 AM ET
Dawn has officially entered the Ceres approach phase, after recently emerging from behind the sun relative to Earth and thus coming back into reliable communication range. The probe will enter orbit around Ceres on March 6.
29 December 2014, 04:22 PM ET
Unlike previous visualizations, the Evolution and Assembly of GaLaxies and their Environments (EAGLE) simulation incorporates galactic winds into the equation mold the Universe. A team of astronomers from the Universities of Leiden in the Netherland
29 December 2014, 02:42 PM ET
Faced with the job of carefully putting together the $8.8 billion James Webb Space Telescope, NASA and lead contractor Northrop Grumman are starting to run practice assembly tests using a "pathfinder" telescope.
29 December 2014, 01:00 PM ET
How much of the movie "Interstellar" is fiction, and how much is based in fact? Theoretical physicist Kip Thorne writes about his work keeping the science fiction epic within the realm of possibility.
29 December 2014, 11:00 AM ET
In his new book "The Science of Interstellar" (W.W. Norton & Company, 2014), theoretical physicist Kip Thorne discusses his time working on the movie "Interstellar," and his mission to root the film in real science.
29 December 2014, 07:33 AM ET
Here's a look at the top alien-planet discoveries of 2014, from the first potentially habitable Earth-size world to a staggering haul of 715 newly announced exoplanets.
29 December 2014, 07:31 AM ET
Researchers have trained the Hubble Space Telescope on Europa repeatedly since Europa's geysers were first announced last year, in an attempt to confirm and characterize the plumes. But they've come up empty.
28 December 2014, 08:37 AM ET
Venus may have once possessed strange oceans of carbon dioxide fluid that helped shape the planet's surface, researchers say.
26 December 2014, 07:07 AM ET
Mars, like Earth, experiences "macroweather" — atmospheric effects that lie in between short-term weather and long-term climate. The discovery could shed light on the atmospheres of Earth and other planets in the solar system and beyond.
26 December 2014, 07:00 AM ET
One of the most recognizable nebulas of the night sky – the Horsehead Nebula – loses its distinctive shape in a new image released from NASA's Spitzer Space Telescope. In the new photo, the nebula loses its distinctive shape because of infrared light.
23 December 2014, 04:53 PM ET
Two close encounters with a comet, clues about Martian history and more amazing discoveries top Space.com's list of the best astronomy stories of the year.
23 December 2014, 04:00 PM ET
Astronomers have spotted a new object emerging from the ashes of a recently deceased star. The stellar post-mortem may also solve a mystery surrounding the unexpected shape of the star's explosive remains, scientists say.
23 December 2014, 03:30 PM ET
A NASA satellite has snapped a picture of Christmas from space, Christmas Island, that is. The space agency's Aqua satellite, responsible for monitoring Earth's water in its many forms, caught sight of the island in the Pacific Ocean.
23 December 2014, 06:30 AM ET
"Interstellar" was driven by scientific accuracy and top-notch visual effects, says Paul Franklin, the effects supervisor for the sci-fi hit.
22 December 2014, 09:45 PM ET
Comet ISON, discovered by two amateur astronomers in Russia, arrived in Earth's neighborhood in November 2013 and apparently broke up as it rounded the sun.
22 December 2014, 05:17 PM ET
The new image, which was taken by the NuSTAR spacecraft, is the best-ever view of the sun in high-energy X-ray light. The photo, and others taken by NuSTAR in the future, should help researchers learn more about our star, researchers said.
22 December 2014, 04:29 PM ET
It may only take brushing your teeth to help you feel connected to the cosmos. New research suggests that fluorine, an element in toothpaste, may have been forged billions of years ago inside stars that are now long dead.
22 December 2014, 03:33 PM ET
An X1.8-class flare erupted from an active sunspot on Dec. 19th, 2014. NASA's Solar Dynamics Observatory captured the fireworks.
22 December 2014, 07:36 AM ET
In March 2015, NASA's Dawn spacecraft will arrive in orbit around the dwarf planet Ceres, the largest object in the main asteroid belt between Mars and Jupiter. Ceres may be capable of supporting life as we know it, some researchers say.
20 December 2014, 12:00 PM ET
See photos and images of the biggest solar flares of 2014 in this SPACE.com gallery of photos by NASA spacecraft and solar astronomers.
20 December 2014, 11:49 AM ET
The sun fired off a massive solar flare late Friday (Dec. 19), after days of intense storms from our nearest star. The huge solar flare registered as an X1.8-class event, the most powerful type of flare possible, and was captured on camera by NASA's powe