If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

In 2020, astronomers detected WD 1856+534 b, a gas giant that orbits a star 81 light-years from Earth. This exoplanet, which ...

Astronomers using the James Webb Space Telescope have directly detected the faint glow of a planet that’s colder than any ...

The solar system consists of our star, the sun, and everything bound to it by gravity: the planets Mercury, Venus, Earth, ...

World Bank Vice President Ismail Serageldin warned that whereas the conflicts of the previous 100 years had been over oil, ...

Earth's forests play a critical role in keeping our planet habitable. Often called the "lungs of the Earth," forests cover ...

The planet is "crumbling to pieces," shedding the equivalent of Mount Everest’s mass every 30.5-hour orbit and will be ...

Once a year, this planet passes through a celestial beehive typically seen in the night sky during the spring. And it's about ...

A rare and dramatic scene unfolds 140 light-years from Earth. A rocky planet, once whole, is now crumbling to dust under the ...

Wildlife filmmaker Bertie Gregory curated the final selection for the "NatGeoYourShotOurHome" challenge from thousands of ...

The planetarium, located at 100 Center Ave., is open from 8 a.m. to 4 p.m. Monday and Tuesday; 8 a.m. to 7:30 p.m. Wednesday ...

Planet Ark Environmental Foundation, one of Australia's largest environmental non-for-profits, has entered voluntary admission by its board following a review of its "financial position and future ...