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31 December 2014, 08:05 AM ET
NASA has proposed a new citizen science challenge called the 20-20-20 Airship Challenge that calls for high-altitude and long-duration airship designs.
31 December 2014, 08:00 AM ET
Look to the skies in 2015 to see total eclipses, amazing planets and meteor showers. Here are some of the most noteworthy skywatching events coming up next year. Space.com will provide more extensive coverage of most of these events as they draw closer.
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, 08:03 PM ET
NASA's Barry Wilmore and Terry Virts send their well wishes from the International Space Station.
30 December 2014, 07:34 PM ET
The latest episode of the Space Telescope Science Institute's "Tonight's Sky", learn where to find Venus, Mercury, Jupiter and Saturn. Constellation of Auriga, bright star Capella and the Pleides star cluster highlight the month.
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, 03:59 PM ET
The voice of the late astronomer Carl Sagan plays over footage of the recent test flight of the Orion spaceship, in a new video by Space City Films.
30 December 2014, 02:48 PM ET
NASA's flight control team in Houston wished International Space Station commander Barry "Butch" Wilmore a happy 52nd birthday on Dec. 29th, 2014.
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, 12:56 PM ET
How do you celebrate a birthday in space? A NASA astronaut on the International Space Station found out how to have a cosmic birthday party Monday (Dec. 29).
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, 09:34 AM ET
The Dawn mission will arrive at the dwarf planet in March 2015. The probe uses an ion engine to propel it throughout the solar system. Find out how they work.
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, 06:46 PM ET
The 'Interstellar' actress talks about the early stages of the space agency's exploration agenda.
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, 03:56 PM ET
The first-ever hand tool to be emailed up to the International Space Station can now be downloaded to anywhere on Earth.
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, 12:14 PM ET
The beginning of 2015 will be the best time to observe a new comet that could put on a potentially spectacular show in Earth's skies.
29 December 2014, 12:00 PM ET
What can space fans look forward to next year? Closely watched spacecraft are expected to start pumping out science, while private spaceflight companies have a number of launches on the books for 2015.
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, 10:01 AM ET
The space agency continued their exploration mission with many scientific discoveries on Earth and beyond in 2014. They also announced plans and conducted tests for future missions.
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, 01:33 PM ET
In a two-in-one mission, the Indian Space Research Organisation (ISRO) successfully conducted the first experimental flight of its next-generation launch vehicle and demonstrated the re-entry and recovery of a prototype crew capsule.
28 December 2014, 01:23 PM ET
The Russian space agency, Roscosmos, successfully demonstrated the heavy-lift version of its long-awaited Angara series of rockets Dec. 23 from the Plesetsk Cosmosrome in northern Russia, the agency said.
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.
27 December 2014, 09:06 AM ET
Look to the sky Sunday (Dec. 28) to see the moon in a close encounter with the planet Uranus. Uranus is theoretically visible with the unaided eye, but realistically most of us need binoculars to see it.
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.
25 December 2014, 08:20 AM ET
While lights decorating Christmas trees twinkle indoors, the stars of the Christmas sky shine brightly during the last week of 2014.