A four-planet system reveals remarkable insights about how planets form and how they change during their lifetime.

For the last month and change, you might've seen the headlines about the planetary alignment, or a planetary parade, going on in our solar system. And that's true. In January 2025, Venus, Mars, ...

Astronomers have cataloged thousands of exoplanets, and a pattern keeps showing up: Around most stars, the most common ...

INDIANA, USA — As soon as the sun sets, step outside and look up to witness a rare celestial event: full planetary alignment. Between Feb. 23 and Feb. 28, 2025, all seven planets will align in the ...

A special planetary alignment is occurring in late February. Five planets are visible to the naked eye, with two more faintly showing. Here's how, where, and when to see the planets line up. The ...

On Saturday (Jan. 10), for example, we will see three satellites on one side of Jupiter (going outward from the planet: Ganymede, Io and Europa ), while the fourth ( Callisto) remains all by itself on ...

Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune ...

LYNCHBURG, Va. (WSET) — If you're trying to get a beautiful look at the planets in our solar system, you're in luck. Between February 25 and February 28, all seven planets in our solar system will be ...