Spacecraft

NASA’s presumptive next leader, billionaire private astronaut Jared Isaacman, already has big plans for the space agency

The Chandra X-ray Observatory is facing closure. Shutting it down would be a loss to science as a whole

A special spacecraft will guide the space station through Earth’s atmosphere, but what about other large pieces of space debris?

For the first time, we are sending a spacecraft to explore an alien ocean world—a moon that might host life today

Sooner or later a doomsday asteroid will wipe out most life on Earth—unless, that is, we prevent threatening space rocks from hitting us in the first place

We are in a new and different kind of moon race, one the U.S. is losing. To win, says a former NASA official, we need new strategies

An office in the Pentagon investigated UFOs—and the paranormal—over a decade ago, segueing into a long saga leading to Congressional hearings and breathless news stories today. But the real story looks more like former defense officials pushing their personal mythology, rather than any cover-up of aliens

A small asteroid, 2024 PT5, will spend the next two months alongside our planet as a mini moon before swooping back to deep space

Scientists are putting a new spin on the creation of binary asteroids

Rather than building an obsolescent, obscenely-over-budget jumbo rocket, NASA should turn to building truly innovative space technologies and plan a realistic lunar landing program

The world’s richest man, Elon Musk, owes his superstar success to self-satisfied competitors who blew obvious opportunities

NASA flight engineer Matthew Dominick’s astrophotography helps us see our world—from space