The red, brown and gray hunk is about 70% larger than the next largest piece of Mars found on Earth and represents nearly 7% ...

Compare Mars and Earth in size, atmosphere, gravity, and potential for life. Discover their differences and shared traits. Explore the mysteries of the Red Planet!

NASA’s Perseverance Mars rover has collected its first sample of rock for return to Earth, part of its mission to finally reveal whether the red planet ever hosted life.