More than 1 million "interstellar objects" the size of the Statue of Liberty could be drifting unseen in the outer solar ...

Aimed at the nearby star PDS 70, the James Webb Space Telescope is watching newborn planets take shape before our eyes in ...

Canadian astronomers have taken an extraordinary step in understanding how planets are born, using the James Webb Space ...

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

In January 2025, Venus, Mars, Jupiter, Saturn, Uranus and Neptune were all visible in the night sky. And in February, 2025, ...

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

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

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

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 ...

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 ...

Mars, our neighboring red planet, possesses some of the most dazzling and extreme geological features within our solar system ...