Discovered in 1930 at the Lowell Observatory, Pluto was demoted as a planet in 2006. Some want President Trump to take action via executive order.

A newly identified world beyond our solar system is giving scientists a fresh look at how strange planets can be, and it may come with a stench to match. Astronomers have discovered what appears to be ...

A rugged Martian landscape that resembles a vast spiderweb when seen from orbit is offering new insights into the planet’s ...

NASA chief Jared Issacman appears to be among those who support Pluto being reclassified as a planet. Could President Trump sign an executive order?

Astronomers may have discovered a new type of planet beyond our solar system, according to new research. The exoplanet, named ...

Add Yahoo as a preferred source to see more of our stories on Google. More evidence that Mars was once a habitable, wet oasis not dissimilar to Earth has been found in the rocks scattered throughout ...

NASA photos appear to show a pyramid-like structure the same size as Giza on Mars, prompting speculation about whether an ...

NASA’s James Webb Space Telescope has found a previously unknown moon orbiting Uranus. NASA announced the discovery on Tuesday, adding that the moon was first spotted on Feb. 2. Scientists estimate ...

The Mars Perseverance rover has been investigating the Jezero Crater and came across something that is not native to Mars at all. It is a meteorite that collided with the red planet. Though various ...