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

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

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

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

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.

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.

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 ...

An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how planets form.

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.

Detection of hydrogen sulfide in four HR 8799 gas giants provides evidence of solid accretion, clarifying how massive exoplanets form and distinguishing them from brown dwarfs ...

Astronomers have long wondered why planets orbiting two stars like the iconic Tatooine in Star Wars are so rare. You would expect them to be everywhere, really. Most stars form with planets, and a ...

For life to develop on a planet, certain chemical elements are needed in sufficient quantities. Phosphorus and nitrogen are essential. Phosphorus is vital for the formation of DNA and RNA, which store ...