13 July 2015, 01:52 PM ET
Investigation of imagery and other data from the approaching probe reveal Pluto to be larger than previous estimates. Principal investigator Alan Stern explains the implications on ice composition, rock estimates, and atmospheric composition.
13 July 2015, 08:14 AM ET
On Tuesday morning (July 14) — nine and a half years after launching, and a quarter-century after its mission began to take shape — NASA's New Horizons probe will perform history's first flyby of Pluto.
11 July 2015, 08:11 AM ET
At the edge of Earth's magnetic field, oceanlike waves appear, and scientists think they may be responsible for the "space weather" that causes auroras and disrupts communications.
07 July 2015, 06:54 AM ET
A vortex of stars seems to swirl above Table Mountain in South Africa in the winning image of this year's International Earth & Sky Photo Contest. The entries draw attention to light pollution and the beauty of the night sky hovering above Earth.
06 July 2015, 04:57 PM ET
Nearly 30 observations were lost due to a glitch during a system update on July 4th, 2015. NASA principal investigator Alan Stern lists the data that will not be retrieved from July 4th until July 7th.
30 June 2015, 03:49 PM ET
A bright object lit up the skies at 1:29 EST on June 29th, 2015 across multiple southeastern states.
28 June 2015, 04:44 PM ET
An unmanned SpaceX cargo mission crashed back to Earth today (June 28), marking the third failure of a resupply flight to the International Space Station in the past eight months. SpaceX and NASA officials still aren't sure exactly what happened.
26 June 2015, 02:53 PM ET
Due to a "gradual slow down" of the Earth's rotation a 'leap second' has been added to June 30th. Scientists use a technique called Very Long Baseline Interferometry (VLBI) to measure how long it takes the Earth to make a full rotation.
25 June 2015, 12:19 PM ET
A Neptune-size planet with a giant plume of gas streaming behind it like a comet's tail has been discovered by astronomers, and is the first such planet ever discovered.
23 June 2015, 11:37 AM ET
A monster black hole in the heart of a barred spiral galaxy called NGC 1097 has the mass of 140 million suns, according to new measurements. A vivid video by the National Radio Astronomy Observatory describes how researchers "weighed" the black hole.
19 June 2015, 09:39 PM ET
In our solar system, the objects with rainfall, rivers and oceans can be counted on two fingers: Earth, and Saturn's moon Titan. Both also share a thick atmosphere, rocky ground and plate tectonics.
18 June 2015, 02:31 PM ET
The moon is surrounded by a permanent dust cloud likely caused by comet particle collisions, new observations reveal. NASA's LADEE moon dust probe data suggests the lunar dust cloud that is different than that seen by astronauts on Apollo 15 and 17.
18 June 2015, 07:22 AM ET
Researchers have found that the vast majority of brimstone — reverently referred to in biblical times as "burning stone," but now known more commonly as sulfur — dwells deep in the Earth's core.
17 June 2015, 10:44 AM ET
Reaching a a maximum throat temperature of 1253°C, an additively manufactured combustion camber and nozzle by Airbus Defence & Space survived 618 ignitions, a total operation time of over an hour and one continuous 32 minute burn.
15 June 2015, 02:32 PM ET
A European probe that made a bouncy landing on a comet last year and then slipped into an silent hibernation is alive again and phoning home. The Philae comet lander on Comet 67P/Churyumov-Gerasimenko beamed its "alive" signal home on Saturday, June 13.
12 June 2015, 11:13 AM ET
Astronomers have long known that galaxies spin more quickly than can be explained by the laws of physics.
12 June 2015, 11:07 AM ET
Supersymmetry is widely considered to be one of the most promising theories for extending our understanding of the Universe. In this video, Dr. Don Lincoln explains what Supersymmetry actually is.
11 June 2015, 12:55 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.
11 June 2015, 12:34 AM 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.
06 June 2015, 01:56 AM ET
On Wednesday, President Barack Obama mentioned something curious in a tweet — it was a message about the cosmos.
04 June 2015, 11:40 PM ET
NASA could land astronauts on the Red Planet by 2039 without breaking the bank, provided the space agency takes a stepwise approach that includes a manned 2033 trip to the Mars moon Phobos, according to the research.
04 June 2015, 10:47 PM ET
Pluto's moons are even stranger and more intriguing than scientists had imagined, observations by NASA's Hubble Space Telescope reveal.
02 June 2015, 02:12 PM ET
Wispy, featherlike clouds off the coast of Chile appear to cover the Pacific Ocean in white fur, in a newly released satellite photo.
30 May 2015, 02:38 AM ET
Explosive geysers of material that shoot away from black holes at nearly the speed of light seem to form more often in galaxies that are the product of two galaxies merging together, according to a new study using data from the Hubble Space Telescope.
20 May 2015, 04:14 PM ET
The unmanned X-37B spacecraft launched atop a United Launch Alliance Atlas V rocket today (May 20) at 10:45 a.m. EDT from Florida's Cape Canaveral Air Force Station. The booster also carried the Planetary Society's tiny LightSail to orbit.
13 May 2015, 04:49 PM ET
New Horizons took a series of images from April 25 through May 1. The shots mark the first time New Horizons has managed to resolve the extremely faint Pluto moons Kerberos and Styx, mission team members said.
13 May 2015, 04:41 PM ET
Curiosity captured the images, which mission team members combined into a Martian sunset video, with its Mast Camera between dust storms on April 15, NASA officials said.
11 May 2015, 07:50 AM ET
A stunning image of more than 15,000 airplane flights around the world shows that satellite tracking of commercial aircraft is moving closer to reality.
07 May 2015, 01:26 PM ET
Astronomers have spotted a dead star polluted with heavy elements, suggesting that the star recently chowed down on a water-laced asteroid.
07 May 2015, 01:20 PM ET
Scientists at space agencies across the world are using satellite images and other technologies to aid those affected by Nepal's earthquake.
05 May 2015, 04:39 PM ET
The Eta Aquarid meteor shower, produced by debris from Halley's Comet, will peak tonight. Find out where you can see the show, as well as a live webcast hosted by the Slooh observatory.
04 May 2015, 10:04 AM ET
Eerie sounds from the edge of space were recorded for the first time in 50 years aboard a NASA student balloon experiment.