An curved arrow pointing right. 55 Cancri e – a planet eight times the size of Earth – is 40 light-years away. Astronomers just found out what its air is made of. Produced by Matthew Stuart.

This is an artist's impression of 55 Cancri e from further away. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing ...

An curved arrow pointing right. Astronomers were recently able to map the temperature of 55 Cancri E — a Super-Earth 40 light-years away — and discovered half the planet is almost completely ...