Stories by SPACE.com

Astronomers have found iron and titanium in the atmosphere of the Jupiter-sized world KELT-9b, the hottest known exoplanet

A barrage of impacts more than four billion years ago is linked to ancient stones found in Canada

The agency awarded a total of $44 million to multiple firms developing crucial technologies for future space exploration

The Vice President provided more details on the Trump administration’s controversial plans to create a new space-focused military branch

The Golden State’s fiery woes are clearly visible all the way from low-Earth orbit

Nearing the end of its life, the spectacularly successful mission is still churning out new observations

The “Commercial Crew Nine” will fly to space in hardware made by Boeing and SpaceX

 Dubbed Rio 2.0, the scale seeks to measure how important any potential signal from aliens might be

Ancient relics confirm our solar system’s tempestuous origins

The upcoming total eclipse of the moon will be the longest of the 21st century

Earth’s Moon may have once been habitable—but that does not mean it was ever inhabited

New maps suggest evidence of alien life in the icy moon’s buried ocean could be surprisingly easy to find

New observations reveal an infant alien world coalescing from gas and dust around a young star

Wind turbines could produce significant amounts of electricity for robots exploring the Red Planet’s surface

To be successful, scientists searching for extraterrestrial beings may need to revisit some fundamental assumptions about the nature of life itself

The postponement brings the project's total estimated lifetime cost to $9.66 billion—and further delays are possible

A new look at old data from NASA’s Cassini orbiter shows complex organic molecules are gushing from the tiny moon

We're not that close to making self-modifying robots, expert says

The sunlight-sapping global storm has taken NASA’s Opportunity rover offline, perhaps forever

The federal government's five-point strategy is a roadmap for dealing with threatening near-Earth objects

A unique signature in gravitational wave observations could show that hypothetical tunnels through space-time actually exist

The President’s proposal could create a new branch of the armed services meant to assure “American dominance” in space

The photosynthetic organisms subsist on redder, lower-energy light than other species, and could be a new source of fuel and air for interplanetary outposts

Dust clouds blotting out the sun could be the end of the solar-powered probe