First Potentially Habitable Earth-Sized Planet May Have Liquid Water

This is the first earth-sized planet within the habitable zone of another star.

“What makes this finding particularly compelling is that this Earth-sized planet, one of five orbiting this star, which is cooler than the Sun, resides in a temperate region where water could exist in liquid form,” says Elisa Quintana of the SETI Institute and NASA Ames Research Center who led the paper published in the current issue of the journal Science. The region in which this planet orbits its star is called the habitable zone, as it is thought that life would most likely form on planets with liquid water.

Steve Howell, Kepler’s Project Scientist and a co-author on the paper, adds that neither Kepler (nor any telescope) is currently able to directly spot an exoplanet of this size and proximity to its host star. “However, what we can do is eliminate essentially all other possibilities so that the validity of these planets is really the only viable option.”

By: Cheston Catalano

Cheston Catalano is a Kentucky-based journalist whose work has been featured in the Chattanooga Times Free Press and the Clarksville Leaf Chronicle. He is a long-time contributor to Liberaland.