Billions of years ago, another planet smashed into Earth. An event of this epicness could have created our Moon. It also ...

Planets orbiting stars beyond the solar system come in all shapes and sizes but mostly fit into a few categories: large and hot gas giants, super-Earths that are slightly larger than our planet, ...

A dune field on Mars, as seen by the Mars Reconnaissance Orbiter.

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While long-fabled technologies like Smell-O-Vision are still a long way off from ever being a reality, astronomers can still technically smell stuff deep in space without actually having to get a ...

A rocky world orbiting within its star’s habitable zone may be surrounded by a helium-rich atmosphere, providing the strongest evidence yet that planets with Earth-like conditions could support life ...

Investor excitement around the SpaceX IPO is colliding with peak Elon Musk futurism after a new social media post featuring his musings about light-speed travel and exploring alien worlds. In a social ...

The picture-perfect launch of NASA’s Roman Space Telescope could push forward the space agency’s ultimate search for life across the Milky Way, says a leading astronomer.

When/if alien life ever cruises toward Earth in big spaceships, we’re probably not just going to see it; we’re going to hear it via narrow radio signals. If an extraterrestrial civilization wanted to ...

Time works differently in space and on other planets, so the decade-plus that Alien Isolation fans have been waiting for the sequel might have felt like a blink of an eye on a different world. On ...

NASA is ready to explore the cosmos in a whole new way, thanks to its next-generation Nancy Grace Roman Space Telescope. Scientists and engineers have spent some twenty years designing and building ...