and what the discovery of a real Earth twin could mean throughout a chat at the 221st American Astronomical Society assembly in Long Seaside, Calif., on Jan. Scientists say the planet, if confirmed, might be a main candidate to host alien life. The candidate planet orbits a star similar to the solar at a distance that falls throughout the “habitable zone” — the region the place liquid water Valentino rossi motorbike sports poster may exist on the planet’s surface. With a radius that is just 1.5 times that of Earth, the potential planet is a so-known as ” super-Earth ,” meaning it’s simply slightly larger than the Earth. Unlike lakes and streams, seawater — or ocean water — is salty. Hydrothermal vent An opening at the bottom of the ocean or a lake where sizzling water emerges from deep inside Earth.