03 March 2015, 12:00 PM ET
Scientists believe conditions may be right for life, under Europa's icy crust.
26 February 2015, 09:40 AM ET
The Gemini Twins and a dimmer Cancer constellation make their way into the night sky in March.
21 February 2015, 04:46 PM ET
Europe's last cargo spacecraft came down to Earth in a fiery blaze and scientists reported seeing mysterious plumes emanating from Mars. Here are Space.com's picks for the best space stories of the week.
20 February 2015, 07:00 AM ET
NASA officials have asked scientists to consider ways that a Europa mission could search for evidence of alien life in the plumes of water vapor that apparently blast into space from Europa's south polar region.
18 February 2015, 06:30 AM ET
Bantam spacecraft should survive for about 15 minutes in Jupiter's thick air before bursting into flame, according to researchers developing a concept mission called SMARA (SMAll Reconnaissance of Atmospheres).
09 February 2015, 10:20 PM ET
Europa is an icy moon of Jupiter and one of the four so-called Galilean moons.
06 February 2015, 08:44 PM ET
The icy moon Europa is perhaps the most tantalising destination in our solar system.
05 February 2015, 04:25 PM ET
Jupiter will dazzle all night long for the entire month, and if you’re awake in the early morning hours, look for the ringed wonder, Saturn. Skywatchers will also have good opportunuties to see Mercury, Venus and Mars this month.
05 February 2015, 03:00 PM ET
See photos of a rare triple-moon conjunction on Jupiter as the shadows of Europe, Io and Callisto pass across the planet's face on Jan. 24, 2015 as seen by NASA's Hubble Space Telescope and skywatchers.
05 February 2015, 02:11 PM ET
The rare triple-moon conjunction, which Hubble witnessed on Jan. 24, involved Io, Callisto and Europa — three of Jupiter's four Galilean moons (so named because they were discovered by astronomer Galileo Galilei in the early 17th century).
05 February 2015, 11:24 AM ET
The Hubble Space Telescope’s Wide Field Camera caught Io, Callisto and Europa and their shadows passing across the face of Jupiter on Jan. 23rd, 2015, which happens only once or twice per decade.
03 February 2015, 03:19 PM ET
If your sky is clear early this evening, about an hour after sundown, you might be able to see the February full moon — sometimes known as the 'Snow Moon' — shining with the giant planet Jupiter in the east-northeast sky. Jupiter should be located to the
02 February 2015, 07:42 PM ET
The White House's fiscal year 2016 budget request for NASA, which was released Monday (Feb. 2), allocates $18.5 billion to the space agency, including $30 million to formulate a mission to Jupiter's moon Europa.
28 January 2015, 04:25 PM ET
Space Station crew member Terry Virts (NASA) snapped imagery of the storm that slammed the Northeast United States during a night pass on Jan. 28th, 2015. The ISS was orbiting at an attitude of 260 miles during the fly-over.
26 January 2015, 12:16 PM ET
The NOAA GOES-13 satellite captured the massive winter storm bearing down on the east coast of the United States on Jan. 26th, 2015. GOES ‘sees’ infrared radiant energy and reflected visible light.
23 January 2015, 10:37 AM ET
22 January 2015, 03:41 PM ET
On Friday night (Jan. 23), observers all across North America will witness a rare event when three of Jupiter’s moons, and their shadows, pass across the face of the giant planet. The next such "triple transit" won't occur until 2032.
20 January 2015, 03:53 PM ET
When astrobiologists contemplate life on nearby planets or moons, they often suggest such life would be simple. Instead of there being some kind of multicellular organism on, say, Jupiter's moon Europa, scientists instead aim to find something more like a
15 January 2015, 07:41 PM ET
The NASA probe launched in January 2005 and will encounter Pluto in the summer of 2015.
13 January 2015, 07:30 AM ET
Researchers were able to pinpoint the Saturn system's center of mass, or barycenter, within about 2 miles — a 50-fold improvement over the best estimates provided by ground-based telescopes, NASA officials said.
11 January 2015, 09:00 AM ET
Getting a handle on what rocky worlds in our solar system would look like from afar will give us a basis for comparison as we seek out distant, habitable exoplanets.
07 January 2015, 03:12 PM ET
Skywatchers have a chance to spot the bright planet Jupiter and the moon sparkling brightly in the sky tonight, weather permitting, but only if you know when and where to look.
05 January 2015, 01:42 PM ET
Skywatchers will be treated to a fascinating ballet of the so-called Galilean moons throughout the month, as the satellites pass one another, sometimes blocking (occulting) or casting shadows (eclipsing) and casting shadow onto Jupiter’s cloud tops.
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.
15 December 2014, 01:40 PM ET
Skywatchers with telescopes on Earth will be able to witness a remarkable cosmic event tonght: Two of Jupiter's moons will cast shadows on the face of the gas giant in the same night.
08 December 2014, 03:55 PM ET
One of the treats awaiting owners of a new telescope is their first look at the giant planet Jupiter and its four tiny moons.
04 December 2014, 05:10 PM ET
The way we define life has consequences for the search for life on other worlds such as Mars, Jupiter's moon Europa and the Saturn satellite Enceladus.
02 December 2014, 11:00 AM ET
With luck, skywatchers can catch sight of the five brightest planets in the sky this month. Mercury, Mars, Venus, Saturn and Jupiter should all be on display.
24 November 2014, 03:31 PM ET
An incredible, reprocessed picture of Jupiter's moon Europa shows the mysterious natural satellite's amazing colors as they have never been seen before.
24 November 2014, 03:30 PM ET
See photos of Jupiter's ice-covered moon, Europa
21 November 2014, 07:00 AM ET
Binary Earth-size planets that orbit each other might exist around distant stars, researchers say. Simulations suggest such worlds can begin circling each other after slow, grazing collisions.
20 November 2014, 02:01 PM ET
The strength of an alien world's magnetic field may have been deduced for the first time, by analyzing fast winds slamming against it from the planet's star. The research could help gauge the strength of other exoplanets' magnetic fields as well.
17 November 2014, 10:25 PM ET
Learn about the physical characteristics of Saturn and its famous rings, what we know about Saturn’s moons and Saturn’s roots in Greek mythology.
17 November 2014, 02:18 PM ET
The Great Red Spot on Jupiter's face is secretly dull in color. But the swirling storm looks crimson thanks to something like a cosmic "sunburn." Gases in Jupiter's upper atmosphere turn reddish when they're hit with sunlight, scientists say.
15 November 2014, 10:40 AM ET
If you were up late Friday night, or rather awake in the wee hours of Saturday, you may have seen two brilliant objects that will immediately catch your eye if the sky is clear.
14 November 2014, 12:59 AM ET
Jupiter is the largest planet in our solar system, and is known for its many moons, its dangerous radiation belt and its iconic Great Red Spot.