Dr Naomi Lavelle: Is there (or could there be) life on Mars?

Could humans ever leave Earth to make a life for themselves on another planet?

EMBARGOED TO 1600 MONDAY MAY 18 Undated handout file photo issued by Nasa of a Hubble Space Telscope image of Mars. Mud flows exposed to the low atmospheric pressures and temperatures on Mars behave in a similar way to lava flows in Hawaii, study suggests.

If we look to the skies on a clear night we get a glimpse of the expanse of space and the planets beyond our own. It may make you wonder, could humans ever live somewhere other than Earth?

Living in space