The red planet was half blue, according to space scientists. A research team using images from cameras on Mars-orbiting spacecraft say it was a "blue planet" around three billion years ago – with an ...

Most of the exoplanets we’ve discovered have been in relatively tight orbits around their host stars, allowing us to track them as they repeatedly loop around them. But we’ve also discovered a handful ...

"Our discovery offers further evidence that the galaxy may be teeming with rogue planets." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Rogue ...