Planets are born, and they can also "die." So what's the lifespan of a typical planet?

Gas giants possibly developed slowly in the solar system. They developed cores layer by layer within a disk of ice and dust ...

Look west just after sunset from this weekend for a chance to see some of six planets, though the best views will be had ...

By Will Dunham WASHINGTON, Feb 14 (Reuters) - Astronomers have observed a planetary system that challenges current planet ...

General relativity helps explain the lack of planets around tight binary stars by driving orbital resonances that eject or destroy close-in worlds. This process naturally creates a “desert” of ...

A closer look at the planets around a star called LHS 1903 may just flip our understanding of how planetary systems form.

Stargazers, get ready for a celestial show! A planetary alignment featuring six planets will be visible in late February and early March 2026. Here's how to see it.

New research suggests Einstein's general relativity explains the rarity of planets orbiting two suns. In tight binary systems ...

Explore the visibility of Mercury, Venus, Jupiter and Saturn in February 2026. Discover observation dates, locations and details based on Space.com and NASA data.

Astronomers have found a distant world that challenges planetary formation theory, with a rocky planet where gas giants should be.

A young star called V1298 Tau is giving astronomers a front-row seat to the birth of the galaxy’s most common planets. Four ...

Learn why only 14 out of over 6,000 exoplanets orbit two stars, and how Einstein’s general theory of relativity may be to blame.