SpaceX tapped cryptocurrency billionaire Chun Wang to lead a private crewed mission around Mars and the moon. Here's ...

For decades, one of the biggest challenges of sending humans to Mars hasn’t just been getting there, it’s getting back.

A researcher says he found a possible shortcut to Mars that would halve the time it takes to travel to the planet and back to less than a year.

A health scare prompted the first ever early return from the International Space Station for a medical reason. Does it change ...

Landing humans on Mars could teach us whether life ever existed beyond Earth, how planets change over time, and how humans can live on other worlds. By studying Mars up close, astronauts could answer ...

Around the world, people watched NASA’s Artemis II mission in awe as humans returned to lunar orbit for the first time since ...

A prototype ion engine that uses lithium vapor as a propellant has aced its first tests, achieving 25 times more power than previous ion engines.