12 June 2015, 06:30 AM ET
At the 2015 World Science Festival, four prominent astrophysicists discussed one of the most troubling (and embarrassing) puzzles in modern physics, and whether a theory of multiple universes can hope to solve it.
11 June 2015, 05:01 PM ET
The NASA probe's LORRI instrument snapped new imagery of the double planet from May 28th until June 3rd, 2015. The ice dwarfs' features are starting to come into focus.
11 June 2015, 03:11 PM ET
WASP-33b, an exoplanet 4 1/2 times more massive that Jupiter, has a layer in its atmosphere that absorbs ultraviolet radiation, preventing UV from reaching the surface. Earth has a similar stratospheric UV filter.
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.
11 June 2015, 07:14 AM ET
Fifteen-year-old Tom Wagg first spotted the Jupiter-size exoplanet two years ago. Further observations have now confirmed the existence of WASP-142b, which lies about 1,000 light-years from Earth.
11 June 2015, 07:00 AM ET
The new photos from NASA's Dawn spacecraft resolve Ceres' bright spots into numerous points of varying sizes. But researchers still don't know what the spots are.
11 June 2015, 06:20 AM ET
Poised on the edge of a galactic desert is NGC 6503, a galaxy that appears so alone in the universe that some scientists have called it "lost in space."
10 June 2015, 05:17 PM ET
Mapping our Milky Way galaxy is a mind-bending challenge, but a new view of our galactic home is helping refine that map by charting more than 400 clusters where new stars are born.
10 June 2015, 02:51 PM ET
The legacy of Leonard Nimoy has reached the Final Frontier: on June 2, a 6-mile-wide asteroid was named 4864 Nimoy in his honor.
10 June 2015, 01:34 PM ET
Are they ice? Salt? Something exotic? NASA is still baffled by the origin of the bright spots observed by the Dawn Mission but the latest mapping orbit of 2,700 miles (4, 400 km) above the surface reveals the best detail yet.
10 June 2015, 01:01 PM ET
Saturn's giant newfound ring is even larger than previously thought, spanning an area of sky
nearly 7,000 times larger than Saturn itself, researchers say.
10 June 2015, 11:15 AM ET
Average distances between galaxies are relatively much smaller than average distances between individual stars. Not so galaxy NGC 6503, which is on its own in a region known as the Local Void, about 17 million light years away from Earth.
10 June 2015, 11:04 AM ET
A baffling new mystery has turned up on Mercury — a pattern of giant cliffs and ridges on the planet's surface that defies any explanation that scientists have currently been able to offer.
10 June 2015, 07:00 AM ET
Star-forming regions of a distant galaxy are revealed by the ALMA telescope.
10 June 2015, 06:17 AM ET
L2 Puppis, one of the closest red giant stars (200 light-years), is dying and puffing off an early stage bipolar planetary nebula.
10 June 2015, 06:00 AM ET
A cosmic butterfly of a nebula is undergoing a stunning metamorphosis in space, according to new images from a telescope in Chile. See the images and video of L2 Puppis here.
10 June 2015, 03:16 AM ET
The millions do not go up in smoke: they are used to pay for jobs and services.
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.
09 June 2015, 06:18 AM ET
A new NASA Web tool called "Pluto Time" lets users experience the light levels that prevail at noon on the dwarf planet. Users enter their location, and Pluto Time tells them the next available opportunity to soak up some Plutonian rays.
09 June 2015, 06:15 AM ET
The new Ceres video, which NASA released today (June 8), was created using 80 images captured by the space agency's Dawn probe during its first mapping orbit of the dwarf planet, from an altitude of about 8,400 miles (13,600 kilometers).
09 June 2015, 02:32 AM ET
A massive new telescope under construction in Chile, the LSST, will be one of the largest eyes on the sky — and it's getting scientists excited about what they might find.
08 June 2015, 10:31 AM ET
As NASA’s Dawn Mission mapped the crater-riddled little world, the images used to make this animation were captured from about 8,400 miles altitude and include navigation imagery from 3,200 miles out.
08 June 2015, 09:37 AM ET
Though Hubble doesn’t typically discover exoplanets, it is sometimes used to determine what lies in their atmospheres. Future telescopes should be powerful enough to ‘see’ markers of life processes in the ‘air’ of Earth-sized alien world.
07 June 2015, 10:00 AM ET
Scientists announced surprising discoveries about Pluto's moons, a spacecraft beamed home amazing images taken from a comet's surface, and the United Arab Emirates outlined its bold Mars plans. Here's a look at Space.com's top stories of the week.
07 June 2015, 09:31 AM ET
From up-close looks at Saturn's "spongy" moon Hyperion to photos of the first NASA spacewalk, which occurred 50 years ago this week, don't miss these amazing space images.
05 June 2015, 08:54 PM ET
The light from the faraway HATLAS J090311.6+003906 structure was warped by a massive foreground galaxy to form an ‘Einstein Ring’ as captured by the ALMA observatory’s Long Baseline Campaign.
05 June 2015, 11:20 AM ET
On Wednesday, President Barack Obama mentioned something curious in a tweet — it was a message about the cosmos.
05 June 2015, 07:50 AM ET
A rundown of some of the most common misconceptions about the dwarf planet, which will be imaged in detail for the first time during the July 14 flyby of NASA's New Horizons spacecraft.
05 June 2015, 07:50 AM ET
From June 7 through June 21, Mars will be behind the sun from Earth's perspective. This geometry makes radio communications between the two planets difficult, so engineers won't send commands to NASA's Mars spacecraft during this stretch.
04 June 2015, 03:39 PM ET
Throw out your textbooks — there are 10 planets in our solar system.
04 June 2015, 01:40 PM ET
Dwarf planet Ceres and asteroid Pallas, discovered in 1801 and 1802, are visible in the night sky in June. Ceres was originally classified as a planet, then an asteroid, and finally a dwarf planet after further observation.
04 June 2015, 07:00 AM ET
The path to Pluto this summer for NASA's New Horizons spacecraft should be relatively smooth and safe, a new and improved portrait of the dwarf planet's moons suggests.