16 July 2015, 08:35 AM ET
A planet remarkably like Jupiter, orbiting a star remarkably like our sun, may have been found by scientists, who say the system could have more planets like our own.
14 July 2015, 04:01 PM ET
Pluto, Charon, and other large objects in the outer reaches of the solar system could boast icy plumes, and NASA's New Horizons mission could find them.
10 July 2015, 04:40 AM ET
Venus is putting on a show for skywatchers throughout July. Tonight (July 10), Earth's "sister planet" will be at its most luminous, blazing brightly in the western sky.
05 July 2015, 07:00 AM ET
A set of sublime images from reader Saheed Jafari show Venus and Jupiter providing cosmic decorations during the month of Ramadan.
01 July 2015, 07:01 AM ET
July offers opportunities to see Venus, Saturn, Jupiter and Mercury overhead. Here's how, and when, to spot them.
01 July 2015, 07:00 AM ET
If you've been watching the western sky just after sunset lately, you will have noticed two bright objects, gradually drawing closer. These are the two brightest planets, Venus and Jupiter, and they're putting on a show this month.
23 June 2015, 07:00 AM ET
NASA hopes to send robotic submarines into Europa's subsurface ocean someday, and researchers are currently testing out some prototypes in Antarctica.
23 June 2015, 07:00 AM ET
Jupiter may have traveled throughout the early solar system, transporting material that eventually formed the terrestrial planets, including Earth, a new study suggests.
22 June 2015, 08:36 AM ET
A new 'green-lighted' mission to the Jupiter moon will use cameras, spectroscopy and other instruments to measure the surface during several years of fly-bys.
20 June 2015, 08:26 AM ET
A spacecraft that will study Europa, one of Jupiter's icy moons with a potentially habitable environment, just passed a major hurdle.
13 June 2015, 10:09 AM ET
A robot designed to tunnel through thick ice caps and penetrate subterranean seas could one day explore the underground oceans of Jupiter's moon Europa — an environment potentially habitable to life.
12 June 2015, 04:10 PM ET
A low-cost telescope that takes its inspiration from Galileo — the famed Italian astronomer who discovered the moons of Jupiter in the 16th century — is once again available to celebrate the United Nations 2015 International Year of Light.
11 June 2015, 12:12 PM ET
New images of Jupiter's volcanic moon Io show "hotspots" happening in different spots on a volcanic lake. Even more surprising given the lake's small size: the images were taken from Earth.
09 June 2015, 06:20 AM ET
NASA officials hope the agency's flyby mission to Europa in the 2020s paves the way for future missions to the Jupiter moon — including, perhaps, one that touches down to search for signs of life.
05 June 2015, 11:20 AM ET
Engineers are looking to automate some of the simple decision-making steps undertaken by Mars rovers and orbiters, which could dramatically improve the science they are able to perform in the search for habitable environments.
31 May 2015, 07:00 AM ET
NASA announced the science instruments for its mission to Europa, SpaceX was certified for U.S. military launches and a tiny solar-sailing spacecraft suffered a glitch in orbit. Here's a look at Space.com's top stories of the week.
29 May 2015, 07:48 PM ET
Hercules, Boötes (Herdsman), and Draco (Dragon) constellations are highlights for sky gazers in June. Also, Venus and Jupiter are bright in the evening sky and Jupiter rings are viewable with binoculars in the southern sky.
26 May 2015, 05:02 PM ET
The Europa probe will carry supersharp cameras, a heat detector, ice-penetrating radar and a variety of other gear that will help researchers gauge the Jupiter moon's ability to support life as we know it.
20 May 2015, 10:33 AM ET
Jupiter's rapidly moving moons constantly surprise us with their dance around the giant planet. There will be two spectacular shadow plays this week.
20 May 2015, 06:30 AM ET
A giant alien planet is seemingly too big for its cool dwarf star, raising questions about how it could possibly have formed. Further investigation of this odd exoplanet could help scientists understand how planets form, researchers said.
13 May 2015, 07:19 AM ET
The reddish-brown lines that crisscross the icy surface of Europa may be radiation-blasted sea salt from the Jupiter moon's underground ocean. Radiation-blasted salt turned dark during a lab experiment that mimicked Europa conditions.
11 May 2015, 07:01 AM ET
Small and economical "cubesats" already eye our planet from orbit. But such bantam craft are about to start pushing out into deep space, helping researchers study and explore the moon, asteroids and other distant bodies.
11 May 2015, 07:00 AM ET
The new ideas funded by the NASA Innovative Advanced Concepts (NIAC) program include a squid-like amphibious rover that could explore icy, ocean-harboring moons such as the Jupiter satellite Europa.
09 May 2015, 11:01 AM 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
06 May 2015, 06:30 AM ET
The water plume seen on Jupiter's moon Europa in 2013 may have been a rare event, which implies the satellite may be a solid ball of ice and inhospitable to life.
01 May 2015, 09:31 AM ET
The Large Binocular Telescope Observatory snapped imagery of an occultation of Jupiter Moon's Io by its sister Jovian moon Europa. The bright spots on Io are its massive lava lakes.
30 April 2015, 07:00 AM ET
The search for life beyond Earth homes in on water, whose unique properties make it critical to life as we know it and whose abundance throughout the solar system is becoming increasingly clear to scientists.
29 April 2015, 03:30 PM ET
Jupiter's aurora — constant curtains and waves of electric-blue colors high in the murky brown atmosphere — flare up because of an effect that has nothing to do with the sun and everything to do with the gas giant's moons.
27 April 2015, 04:40 PM ET
24 April 2015, 03:24 PM ET
About 45 minutes after the sun sets on Saturday and Sunday, Jupiter and the moon will be visible in the southwest sky, roughly two-thirds of the way up from the horizon to the point directly overhead (called the zenith).
22 April 2015, 10:15 AM ET
Super-cold nitrogen geysers on Neptune’s moon Triton, and hot sulfurous plumes high above Jupiter’s moon Io, reveal how these fascinating worlds work. Watch ‘Secrets of the Universe’ on Hulu. http://www.hulu.com/secrets-of-the-universe
07 April 2015, 04:50 PM ET
Solid signs of alien life will be spotted within 10 years, and definitive evidence will roll in within 20 to 30 years, NASA chief scientist Ellen Stofan said Tuesday (April 7).
05 April 2015, 10:15 AM ET
What were our favorite stories of the week? This week had something for every kind of space fan. Find out our favorite stories of the past seven days below:
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.
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.
31 March 2015, 07:00 AM ET
Earlier this month, researchers made two big announcements: Saturn's moon Enceladus likely harbors hot springs, and Jupiter's huge satellite Ganymede apparently possesses a subsurface ocean that may contain more water than all of Earth does.