08 July 2013, 07:00 AM ET
Researchers plan to launch a tiny spacecraft to Earth orbit and beyond in the next 18 months or so, in a key test of new propulsion technology that could help cut the cost of planetary exploration by a factor of 1,000.
28 June 2013, 02:07 PM ET
Mars and Jupiter will shine bright in the predawn morning skies of July 2013. Learn how to see the planets and the annual Delta Aquarid meteor shower in late July.
26 June 2013, 02:21 PM ET
‘Star Trek’ superfans Adam and Leslie Schneider unveil the fully restored Galileo shuttlecraft, a life-size prop from the iconic 1960s TV science fiction series while fans cheer on June 22, 2013. The Galileo will be donated to Space Center Houston.
20 June 2013, 01:50 PM ET
Mercury and the solstice make this a can't-miss week in skywatching.
19 June 2013, 10:16 AM ET
Russia's Ganymede lander could launch with Europe's JUICE probe.
14 June 2013, 11:13 AM ET
Could a small sub help find life under Europa's icy shell?
14 June 2013, 06:49 AM ET
The four Galilean moons of Jupiter are Io, Europa, Callista and Ganymede.
13 June 2013, 03:05 PM ET
The potential world sits about 7.5 billion miles from its host star.
12 June 2013, 02:03 PM ET
Exoplanet experts answer questions about missions to discover and probe alien worlds.
07 June 2013, 06:48 AM ET
These exotic worlds stop their inward migration after their orbits circularize.
07 June 2013, 03:19 AM ET
A night sky photographer shot this stunning image of Orion over mustard fields in India.
06 June 2013, 07:11 AM ET
Certain spots on the icy moon are more likely to preserve pristine compounds from Europa's interior ocean.
04 June 2013, 10:57 AM ET
Look for Mercury, Venus and Jupiter in close proximity in early June, a rare meteor shower in mid June, and near earth asteroids throughout the month.
03 June 2013, 05:04 PM ET
A star smaller than Jupiter regularly fires off flares as powerful as the biggest eruptions from our sun.
29 May 2013, 10:33 AM ET
Massive 'hot Jupiters', gas giants that orbit close to their stars, are usually tidally locked, which means they have a permanent day side and permanent night side. The extreme differences in temperatures on the two sides drive powerful storms.
26 May 2013, 10:10 AM ET
Jupiter, Mercury and Venus will shine in a cosmic triangle just after sunset tonight (May 26).
24 May 2013, 03:48 PM ET
Three planets are teaming up for a Memorial Day planet parade.
22 May 2013, 02:05 PM ET
Don't miss your chance to see three bright planets in the night sky.
22 May 2013, 01:37 PM ET
On May 26th three planets, Venus, Jupiter, and Mercury, will appear in a triangular formation on the western horizon just after sunset.
21 May 2013, 02:38 PM ET
A crew of astronauts venture to Jupiter's moon Europa in the new sci-fi thriller 'Europa Report.'
21 May 2013, 09:50 AM ET
Such a tight three-planet grouping won't happen again until 2026.
20 May 2013, 12:13 PM ET
Night-sky-watchers alert: This tri-planetary conjunction will be most apparent from May 26th to June 5th. Here's where to see it best.
20 May 2013, 07:00 AM ET
The iconic city as seen through other planets' air.
20 May 2013, 07:00 AM ET
The project showcases the diversity of worlds in our solar system.
10 May 2013, 03:27 PM ET
You can see Jupiter and the crescent moon shining in the night sky this Mother's Day.
09 May 2013, 12:25 PM ET
See images and photos of the strange new worlds around the star HR 8799 128 light-years from Earth.
07 May 2013, 04:32 PM ET
Star Trek's original prop shuttlecraft will be heading to the Johnson Space Center's visitors attraction, once its restoration team is done. SPACE.com found project leader Adam Schneider and crew in the ship's Atlantic Highlands, NJ "space-dock."
07 May 2013, 08:00 AM ET
But the more scientists learn, the more questions they have about these strange new worlds.
06 May 2013, 02:00 PM ET
After decades of deterioration, Star Trek's Galileo shuttlecraft mockup is being restored to its original glory.
06 May 2013, 07:00 AM ET
Water in Jupiter's stratosphere almost entirely comes from the 1994 crash of Comet Shoemaker-Levy 9, scientists say.
29 April 2013, 06:45 AM ET
The half-frozen, half-oceanic worlds might be good places to look for alien life.
18 April 2013, 05:00 AM ET
Researchers collected the chemical fingerprints of four warm, cloud-covered alien worlds that lie 128 light years away from Earth.
17 April 2013, 12:36 AM ET
The dark hot spot in this false-color space wallpaper from NASA's Cassini spacecraft is a window deep into Jupiter's atmosphere. All around it are layers of higher clouds, with colors indicating which layer of the atmosphere the clouds are in.
09 April 2013, 03:31 PM ET
Astronomers have caught a black hole snacking on what may be a free-flying giant planet.
05 April 2013, 04:04 PM ET
On April 5th, 1973 the Pioneer 11 spacecraft was launched from Cape Canaveral on what was originally a back up mission for the Pioneer 10. Eventually NASA made an ambitious mid-mission change to Pioneer 11's trajectory, sending it to Saturn & beyond.
05 April 2013, 06:30 AM ET
The hundreds of volcanoes on Io are farther east than they're supposed to be.