Scientists have discovered a warm and rocky “second Earth” circling a star, a find they believe dramatically boosts the prospects that we are not alone.

The planet is the most Earth-like ever spotted and is thought to have perfect conditions for water, an essential ingredient for life. Researchers detected the planet orbiting one of Earth’s nearest stars, a cool red dwarf called Gliese 581, 20 light years away in the constellation of Libra.

Full Story: The Guardian.