Perseverance is hitting the 'open road' on Mars like no other rover. On June 19, the six-wheeled explorer officially completed the longest day trip of any robot vehicle on another planet. In a single ...

A real Mars mission isn’t “months.” It’s 2–3 years, because you can’t just turn around and come back whenever you want. The trip out is usually 6–9 months, then you’re forced to wait 13–16 months on ...

Six planets—including Venus, Jupiter, and Mercury—will line up in the sky. Here’s the best time to watch and where to find ...