Climate scientists say many of the effects of climate change are happening faster than they predicted, the latest on the war ...

The Voyager spacecraft accomplished one of the most extraordinary exploration missions in history. During their journeys past the outer planets, the probes revealed previously unimaginable discoveries ...

Located just 35 light-years away, this world is roughly 1.6 times the size of Earth. But don’t call it a twin. It’s a scorching, pungent orb wrapped in an atmosphere of hydrogen and sulfur, perched ...

Discovered in 1930 at the Lowell Observatory, Pluto was demoted as a planet in 2006. Some want President Trump to take action via executive order.

Astronomers have identified a strange new kind of exoplanet that challenges how scientists classify worlds beyond our Solar System. The planet, L 98-59 d, appears to contain a vast ocean of molten ...

Garlick / markgarlick.com Astronomers have discovered an entirely new kind of planet outside our Solar System, one with a ...

NASA chief Jared Issacman appears to be among those who support Pluto being reclassified as a planet. Could President Trump sign an executive order?

The molten planet, with an atmosphere rich in sulfur-bearing gases, is unlike anything astronomers have ever smelled.

There are worlds like hot Jupiters, gigantic and very hot, as well as ocean worlds and super-Earths with a rocky structure ...

The James Webb Space Telescope and supplementary observations have revealed a new type of magma planet, rich in sulphur.