The strange formation was spotted in a region of the Red Planet known as Cydonia. Cydonia is close to where scientists ...

Deep subsurface microbes are highly diverse, challenging assumptions about life in low-energy environments. This discovery has implications for medicine, energy efficiency, and astrobiology. Which ...

These planets are relatively small in size and in mass. A terrestrial planet has a solid rocky surface, with metals deep in its interior. In the solar system, these planets are closer to the sun ...

Understanding the history of Mars could inform studies on Earth's formation and the earliest evolution of terrestrial planets in general. "Obtaining samples from the only place in the solar system ...