The best reason to send humans to Mars isn’t for guts or glory—or the construction of colonies to safeguard against existential Earth-bound risks. Instead it’s to answer a single, simple question: Is ...

A new photo captured by NASA’s Mars Reconnaissance Orbiter shows a massive dust devil churning across the wind-blasted Martian surface. University of Arizona researchers captured the photo last ...

The Search for Extraterrestrial Intelligence (SETI) focuses on finding technosignatures—potential signs of alien technology. If we look carefully, we might have a chance at detecting their ...

The arrival of an interstellar comet is a truly momentous astronomical event, but witnessing one up close, from the orbit of another planet? That is the stuff of science fiction. Yet, this remarkable ...

There was a rare moment of communion this week when millions of people watched NASA’s Perseverance Mars rover speed toward the surface of the red planet, its parachute opening to reveal a coded ...