A distant star has just been caught in the act of destroying one of its own worlds, a violent finale astronomers have long ...

Mike Brown is convinced that beyond Neptune, at the far reaches of our solar system, there's an unseen giant planet. "This is the 5th largest planet in our solar system, lurking out there, waiting to ...

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the edge of our solar system, evading all our efforts to spot it. Some astronomers ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration showing Planet Nine, a hypothetical, undiscovered planet in our solar system. New research now suggests the ...

A director of a planet-monitoring company recently sold over $1 million in shares amid the company's stock soaring to outer space, like their satellites.

Astronomers announced Wednesday they have discovered a massive planet orbiting a tiny star, a bizarre pairing that has stumped scientists. Most of the stars across the Milky Way are small red dwarfs ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. For five consecutive mornings, beginning on Aug. 17, early ...

A six-planet parade — sometimes called a planetary alignment — will adorn the pre-sunrise morning sky on Friday, Aug. 22, with four of them visible to the naked eye. Venus, Jupiter and Saturn will be ...

The planet "splashed down" into the star, sending a giant plume of gas into space that gave the star a ring. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Satellite imagery and data analysis company Planet announced it had signed a $230 million contract on Wednesday, with an anchor customer for its Pelican satellites. "It's both our biggest deal ever ...

(Correction: An earlier version of this story misstated how far Pluto is from the sun. The correct number is 3.7 billion miles.) What was discovered in Flagstaff, Arizona, and killed off in Prague? If ...

“Captain Planet and the Planeteers,” an animated TBS series from the ’90s about an environmentalist superhero, is being adapted into a live-action series at Netflix with Greg Berlanti and Leonardo ...