Astronomers have flagged a tantalizing candidate for a frozen twin of Earth, a world known as HD 137010 b that appears to ...

Astronomers have pulled a frozen, Earth-sized world out of archival data from the retired Kepler Space Telescope, revealing a planet candidate that circles its star roughly once a year and could host ...

An extreme ice age 700 million years ago caused our planet to become a ball of ice. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking ...