French Spanish Portuguese Italian German Russian Japanese Korean Chinese

Search form

Access language guides
{{ cartQty }} Log in / Register
Make a Gift Become a Member Buy Tickets

Earth-Sized Planet Discovered!

What do scientists look for while searching for an earth-like planet? Similar mass and volume, similar star to orbit around, suitable orbit to have liquid water? Scientists recently announced a planet in the nearby Alpha Centauri star system with the first two of these three criteria.