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Updated: 23 hours 27 min ago
Pluto's status as a "dwarf planet" is once again stirring debate. This comes as some planetary scientists are trying to have Pluto reclassified as a planet – a wish that's not likely to come true.
The current mission of the U.S. Air Force's robotic X-37B space plane is now the longest in the clandestine program's history.
A group of planetary scientists is making the case for a new definition of a planet; this one would include Pluto and most moons. Here's why these researchers think the new definition is better.
Never look directly at the sun, even during a total solar eclipse, like the one that will occur on Aug. 21. Instead, use these tips for how to safely observe the cosmic event.
It is almost six months since the Rosetta spacecraft completed its operations at comet 67P/Churyumov-Gerasimanko. The landing may have marked the end of data collection from the comet – but not the end of news about 67P.
The new science-fiction thriller "Life" focuses on the discovery of alien life from Mars that might not be so nice, so what's in this box the folks behind the movie sent Space.com?
The European Space Agency completed the preliminary design review for the Jupiter Icy Moon Explorer, giving a go-ahead to prime contractor Airbus and its partners to start building a prototype spacecraft to test systems for the mission known as Juice.
ESA’s Copernicus Sentinel-2a satellite captured imagery of the area in January 2016. ’Earth from Space’ host Kelsea Brennan-Wessels explains.
The year 2016 was one for the record books, at least when it comes to the weather. Last year had the highest global temperature in modern history and extremely high levels of carbon dioxide and sea level rise.
The fairy-tale-inspired "Gremlin" program aims to launch and retrieve drones in midair.
The location of newfound water-ice deposits on Ceres are linked to wild swings in the dwarf planet's tilt over the eons, a new study suggests.
Two astronauts are taking a spacewalk outside the International Space Station today (March 24) to prepare the outpost for a new docking ring among other upgrades.
Comets are some of the most captivating sights for skywatchers. Here's how to spot these objects using mobile apps.
No science-fiction movie that takes place at the International Space Station has been quite as terrifying as "Life," a new space thriller that comes out in theaters today (March 24).
They grow up so fast: A new simulation shows how supermassive black holes could have gotten so large, so quickly in the early universe — by taking a shortcut via a star.
Astrophysicist Paul Sutter explains what the science community is doing and the tools they are using to understand dark energy in the Universe.
Two astronauts wandered outside the confines of the International Space Station today (March 24), embarking on the first of three spacewalks scheduled to take place over the next few weeks.
This week, a glance high toward the south-southeast around 10 p.m. will reveal a distinctive pattern: six stars arranged in the shape of a backward question mark, better known as the Sickle, which mark the head, flowing mane and chest of Leo, the Lion.
In space, everyone can see your homages. "Life," Sony Pictures' science fiction thriller starring Jake Gyllenhaal, Rebecca Ferguson and Ryan Reynolds, has been described as "Alien" set on board the International Space Station.
A new episode of the podcast series "Twenty Thousand Hertz" asked NASA scientists what it would sound like on other planets and worlds in Earth's solar system.