The search for life beyond Earth has marked a new discovery — evidence of an atmosphere on an Earth-like planet beyond our Solar System with modelling suggesting it may be a water world.

Our rocky planet sister?

Add Yahoo as a preferred source to see more of our stories on Google. It's a scientific first: the discovery of an atmosphere around an Earth-like planet in the habitable zone. Now, if that sounds ...

This model reveals how vastly different the atmosphere was on ancient Earth, and how life may have first emerged. The key to unlocking the secrets of distant planets starts right here on Earth.

GJ 523b presents an awkward combination for conventional planet-formation expectations: It has approximately 23 times Earth’s ...

Astronomers have peered through the atmosphere of a planet beyond the Solar System, mapping its 3D structure for the first time. By combining all four telescope units of the European Southern ...

Planet Earth has some pretty great qualities going for it. (Negative reviews mostly revolve around the staff and clientele.) Pretty high on the list of positives is a richly oxygenated atmosphere. But ...

This infographic shows the multiple layers of our atmosphere, extending from the ground up into space, and how the new dataset compares in coverage to those currently available. Credit: D.Koshin, K.