Floated by Carl Sagan in the 1970s, terraforming Mars has been relegated to the pages of science fiction. But could it work?

In 2008, NASA's Phoenix spacecraft made a smooth landing on Mars, completing a nine-month, 422 million-mile journey, setting ...

Mars is significantly smaller than Earth, with a diameter about half that of Earth and a mass one-tenth in size. A day on Mars is about the same amount of time as on Earth, lasting 24.6 hours. Mars ...

Using computer models, students Mohammad Afzal Shadab and Eric Hiatt estimated how long it would have taken water to seep ...

I'm incredibly excited, as part of the Ars Live series, to host a conversation with some of the very best space reporters in ...

Great art is called “timeless,” but that’s not quite right. A masterpiece is always timely. The world turns, generations pass ...

The lost six months confirm that Elon Musk, SpaceX’s boss, will not be able to send uncrewed Starships to Mars next year, as ...

Andy Weir’s bestselling story “The Martian” predicts that by 2035 NASA will have landed humans on Mars three times, perfected ...

Facing Tyranny," executive producer Jeff Bieber and Bard College President Leon Botstein reflect on the political ...

On May 28, 1959, two monkeys named Able and Baker became the first monkeys to go to space and make it back alive. On May 28, 1959, two monkeys named Able and Baker became the first monkeys to go ...

Alison is a senior news reporter covering US politics and legal news.

“Oh, absolutely,” he said during Thursday’s Media Day. “Absolutely.” Newgarden, who has won the past two “500s” with last-lap passes, said he has no set plan on how he will drive to the front from the ...