Astronomers have peered into an alien planet's atmosphere and found extreme weather unlike anything in the solar system.

Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar system was the only planetary system known to humans. We had no proof other ...

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe.

Scientists have peered through the atmosphere of a planet outside our solar system and discovered weather patterns "like ...

On February 28, 2025, a rare planetary parade will occur, with all seven solar system planets aligned on one side of the Sun.

Pluto may not be a planet any more, but you still have a chance to see the distant dwarf planet at one of Michigan's ...

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

A parade of seven planets is set to appear in the night sky this month, and it will be the last of its kind until 2040.

"It feels like something out of science fiction," said European Southern Observatory astrophysicist Julia Victoria Seidel.

The gas giant WASP-121b, also known as Tylos, has an atmospheric structure unlike any we have ever seen, and the fastest ...

Astronomers use planetary alignment to describe the phenomenon when planets gather closely on one side of the Sun at the same ...

NASA scientists have detected a star and trailing exoplanet that may be sailing through the Milky Way with unprecedented ...