Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

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, ...

Most people who live in chillier climes aren’t exactly rejoicing when February rolls around — but this year, watchers of the night sky have been positively ecstatic over a rare celestial event taking ...

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 ...

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

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