30 January 2015, 04:11 PM ET
Pluto, the most famous dwarf planet, lost its planet status in 2006. Learn more about dwarf planets of the solar system here.
30 January 2015, 03:46 PM ET
The signal that scientists with the BICEP2 experiment believed to be a sign of inflation in the early universe was actually light from interstellar dust. Today, scientists with BICEP2 and the Planck satellite announced their conclusion.
30 January 2015, 12:20 PM ET
Seven thousand year-old rock paintings in the Sahara desert have, somewhat serendipitously, helped uncover evidence of ancient lake beds.
30 January 2015, 12:01 PM ET
NASA has launched several sounding rockets for scientific research in 2015. See the spectacular photos of these small rocket launches here.
30 January 2015, 12:00 PM ET
With 4km-long lasers, the Laser Interferometer Gravitational-wave
Observatories (LIGO) may detect cataclysmic events far from Earth. This film shows how scientists bridge the gap between the special language of astrophysics and bright young students.
30 January 2015, 11:32 AM ET
New images of Messier 51 (M51), SNR E0519-69.0, MSH 11-62, Cygnus A and RCW 86 have been released for this United Nations-declared event; each a composite of varying Space-based telescopes, including Chandra X-ray, Hubble and Spitzer Space Telescopes
30 January 2015, 07:30 AM ET
Frigid "mini-Neptunes" that take shape relatively far from red dwarf stars could be dragged inward over time, eventually losing most of their thick, gaseous envelopes and ending up in spots warm enough for life as we know it to survive.
30 January 2015, 07:20 AM ET
Scientists on the Curiosity team have brought into question a recent report about potential trace fossils in the Mars rover's images of the Gillespie rock outcrop.
30 January 2015, 07:00 AM ET
NASA is due to launch its SMAP satellite designed to measure moisture in Earth's soils at 9:20 a.m. EST (1420 GMT) on Saturday (Jan. 31) from California. You can watch live coverage of the launch starting at 7 a.m. EST (1200 GMT).
29 January 2015, 02:01 PM ET
Bubbles of radioactive metal may have punched holes in the heart of Cassiopeia A, a nearby supernova, according to new observations. Studying the bubbly interior could help scientists understand why supernovas pop their corks in the first place, and what
29 January 2015, 11:00 AM ET
A Hubble Space Telescope image of NGC 7714 and its companion NGC 7715 reveals dramatic interaction setting off bursts of star formation. This moment of the dance happened 100 million light-years from Earth.
29 January 2015, 09:53 AM ET
The launch of NASA's newest Earth-gazing satellite will have to wait another day due to high winds that made launch too risky Thursday (Jan. 29).
29 January 2015, 06:30 AM ET
The surface of a comet flying through deep space is pockmarked with weird features that are keeping curious scientists working with Europe's Rosetta comet mission busy.
29 January 2015, 06:30 AM ET
NASA is scheduled to launch its next Earth-observing satellite today (Jan. 29) from California, and you can watch the liftoff live online.
28 January 2015, 07:53 PM ET
Variable stars change brightness. But there are many reasons why.
28 January 2015, 04:40 PM ET
On Jan. 22, operators on the ground used two robotic arms to install NASA's Cloud Aerosol Transport System (CATS) instrument on the exterior of the International Space Station.
28 January 2015, 04:38 PM ET
SMAP, or the Soil Moisture Active Passive satellite, will measure groundwater content and frozen/thawed state, all over the world every three days.
28 January 2015, 01:01 PM ET
Have you ever wondered what it would be like to live on Mercury. So did we. Mercury's gravity, temperatures and weather are all very different from Earth's. Here's how.
28 January 2015, 01:00 PM 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
28 January 2015, 12:40 PM ET
Conditions on the planet Mercury would make living there a challenge. See what the days and nights might be like on the closest planet to the sun in our infographic.
28 January 2015, 07:20 AM ET
A greenhouse fire on Dec. 29 halted a simulated Red Planet mission at the Mars Society's Mars Desert Research Station in Utah.
27 January 2015, 06:17 PM ET
Known by some as 'God's Hand,' the faint CG4 object is nothing like a comet. Discovered in 1976, CG4 might be an ordinary spherical star remnant distorted by nearby supernovas or fierce stellar winds from hot massive short-lived stars.
27 January 2015, 05:47 PM ET
NASA's next Earth-observing satellite is ready to launch Thursday (Jan. 29), and it could vastly improve the way scientists monitor droughts around the world.
27 January 2015, 04:40 PM ET
The newfound exoplanets circle a star that's 11.2 billion years old and are all Venus-size or smaller. They are, therefore, all rocky, though scientists know nothing else about their composition.
27 January 2015, 01:36 PM ET
Tantalizing new images of the nearest dwarf planet to Earth are revealing never-before-seen surface features of the mysterious space rock.
27 January 2015, 11:00 AM ET
Vesta was once thought to be dry, but gullies on the walls of impact craters suggest that water flowed briefly on the protoplanet's surface in the relatively recent past.
27 January 2015, 07:20 AM ET
Asteroid 2004 BL86 cruised within 745,000 miles (1.2 million kilometers) of Earth Monday morning — about 3 times the distance between our planet and the moon. And the space rock wasn't alone.
27 January 2015, 02:17 AM ET
Eris, a distant world whose discovery led to Pluto's demotion to dwarf planet, was once proposed as the solar system's 10th planet.
26 January 2015, 06:35 PM ET
A monster storm's claws are definitely out in the satellite photos, which were captured from Saturday through Monday (Jan. 24 to Jan. 26) and combined into a new movie that shows the storm's development and movement.
26 January 2015, 06:35 PM ET
NASA Deep Space Network antenna at Goldstone, California obtained radar imagery of asteroid 2004 BL86, that flew by Earth at ~3.1 times the distance of the Moon on Jan. 26th, 2015.
26 January 2015, 04:06 PM ET
A mountain-size asteroid buzzed Earth Monday morning (Jan. 26) in a close encounter that's already revealing new information about the space rock, including an improved measurement of its size and confirmation of at least one moon.
26 January 2015, 03:03 PM ET
The interplanetary dust particles that fall to Earth from outer space apparently come from comets, according to the latest findings from Europe's Rosetta spacecraft. This discovery could shed light on the origins of Earth and the rest of the solar system.
26 January 2015, 01:32 PM ET
NASA's Soil Moisture Active Passive mission will measure the soil moisture on Earth.
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.
26 January 2015, 12:01 PM ET
Three astrophysicists who discovered the "Fermi bubbles" place the discovery in context, and share what the mysterious bubbles may reveal about the history of our Milky Way galaxy.
26 January 2015, 09:12 AM ET
A huge asteroid will become the largest space rock of its kind to pass closest to Earth until 2027 today (Jan. 26) when it zooms safely by Earth beyond the orbit of the moon. You can see the space rock's flyby live online.