The star astrophysicist sat down with Newsweek to discuss Mars missions and what truly drives human discovery.

Sending astronauts to the red planet will be a decades-long activity and cost many billions of dollars. So why should NASA undertake such a bold mission? A new report published Tuesday, titled “A ...

How can we study Mars here on Earth? We talked to Dr. Jim Zimbelman, a planetary geologist at the Smithsonian National Air and Space Museum, to find out! From his start in science to the future of ...