The curious minds at What If explore what would happen if all the planets of the solar system were in the habitable zone.

It was almost 100 years ago that Clyde W. Tombaugh discovered Pluto. That was the last planet found until 1992, when humans found another one. But this new planet wasn't in our solar system—it was ...

You may be familiar with the notorious Mercury retrograde, but Mercury is not the only planet to go through this stress-inducing phase. In 2025, eight planets will retrograde at various times ...

Six planets will be visible together in a rare 'planet parade' starting Jan. 21 Athena Sobhan is a Digital News Writer at PEOPLE since 2024. Her work has previously appeared in POPSUGAR, EUPHORIA, ...

A stunning alignment of Mercury, Mars, Jupiter, Saturn, Uranus and Neptune will occur this summer in a phenomenon called the 'parade of planets' NASA/Unsplash Point your eyes to the sky this June!

As the United States prepares to celebrate its 250th anniversary, the history of the solar system tells its own story of ...

This story is part of Short Wave's series Space Camp about all the weird, wonderful things happening in the universe. Check out the rest of the series. If you were born in the last century you might ...

The stars and planets are really aligning in January. Skygazers and astronomy enthusiasts can look forward to catching a rare "planet parade" in the night sky through January. According to NASA ...