These suspected caves could be gateways to Mars’ past, and to any future human presence.

The observations were carried out by the Breakthrough Listen program as the object neared its closest approach to Earth on ...

A giant impact on the early Earth could have brought the building blocks of RNA to our planet, which new research suggests ...

Fresh orbital images and new geological analysis have revealed eight mysterious caves on Mars that appear unusually well suited to protect traces of life. Together, these caverns, portals and ...