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

Circinus West is a cold, dense cloud of gas and dust that stretches out for 180 light-years, around 60 times the size of our solar system. Nebulas like this are so dense that light cannot pass ...

NASA’s Lucy spacecraft captures asteroid Donaldjohanson, marking a new step in its mission to explore the solar system’s ...

Galaxies speckle the heavens like stars in a stunning new photo of the deep and distant universe.

The discoveries are helping them better classify different TNOs and understand the complex chemical reactions in space that may relate to the formation of our solar system and the origin of life.

The scientists have named the molecular hydrogen cloud “Eos,” after the Greek goddess of mythology who is the personification ...

Scientists have uncovered a colossal, previously hidden hydrogen cloud, named Eos, just 300 light-years from Earth — the ...

Mar. 17, 2025 — A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system, according to a new ... Webb Telescope Captures Its ...

As summer tourism season heats up, the U.S. National Parks system typically readies for its biggest crowds of the year, but some parks that usually see large numbers of Canadian visitors are ...

Join us in the celebration with a chance to win a National Geographic-Lindblad Expeditions cruise to Antarctica for two! Ever dreamt of gliding on a Zodiac around enormous icebergs of the ...

The surface of Mammoth Cave National Park encompasses about 80 square miles. No one knows how big the underside is. More than 365 miles of the five-level cave system have been mapped, and new ...

The train curves along ledges, hovers over the rushing river below, burrows through tunnels and climbs more than 2,300ft using its cog system ... 2025 issue of National Geographic Traveller ...