Astronomers may have figured out where the mysterious blobs embedded in Mars' mantle originated.

For decades, people have asked if life ever existed on Mars. The question moved from science fiction to careful science with ...

In a groundbreaking development, Ohio State University has unveiled a new concept for nuclear thermal propulsion that could ...

Scientists believe giant impacts – like the one depicted in this artist’s concept – occurred on Mars 4.5 billion years ago, injecting debris from the impact deep into the planet’s mantle. NASA’s ...

While Mars today only has a wispy remnant of an atmosphere, it may once have had one hundreds of times thicker with a ...

There's something big missing from our solar system — and that may be a good thing. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Planetary ...

NASA scientists found old collision pieces on Mars. These pieces are deep inside Mars. They show big crashes from long ago. Mars is like a time capsul ...

NASA’s Perseverance rover has recently discovered the biosignature, revealing the possibility of ancient life that once ...

A mysterious object from interstellar space is screaming through the solar system right now, and is expected to rip past ...

Who hasn't looked into the sky and wondered if there's life out there, somewhere, looking back at us? Is it possible there's ...

I/ATLAS is a fast, ancient interstellar object. Its odd features fuel both scientific study and speculation. On July 1, astronomers detected a strange, fast-moving object racing toward the Sun. Named ...

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars. When you purchase through links on our site, we may earn an affiliate commission.