According to NASA, a low Earth orbit (singular) is any orbital trajectory that stays within 1,200 miles (2,000 kilometers) of ...

Long ago, the Moon was much nearer Earth. Scientists believe a protoplanet collision created the Moon 4.5 billion years ago.

Around the world, international borders are hardening. Nations are competing for resources, technology and even orbits. But in Vienna this June, a different vision took center stage. One where space ...

While the weather is still warm almost everywhere and the leaves have yet to turn, fall is almost here. The official arrival of the season is the autumnal equinox, which occurs in the Northern ...

If NASA must pull back, Europe is ready to step up — and do so with open arms. As climate extremes intensify and global tipping points loom, Earth science has never been more vital — but not everyone ...

Earth's rotation is randomly speeding up, and nobody is quite sure why. These speedups, which have occurred several times over the last few years, haven't had any effect on daily life, but they also ...

Gold mixes with seawater from rivers, aeolian dust, and hydrothermal vents. It also binds to particles and settles on the ...

The Ring of Fire is an enormous belt of active and dormant volcanoes that surrounds most of the Pacific Ocean. It runs from southern Chile, up the west coast of the Americas, through the islands off ...

After fifty years of books, games and movies, what more could the Aliens franchise deliver? An inventive TV show, with fresh ...