The International Space Station (ISS) is now orbiting Earth at a record altitude of 262 miles (422 km). It was deliberately nudged to a higher position just recently by a SpaceX Dragon spacecraft.

The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

In a blow to anyone dreaming that complex life may exist elsewhere in the universe, a new study suggests we're unlikely to ...

For more than sixty years, a tiny asteroid has been moving in step with Earth, hidden from view until recently. Astronomers now confirm that this small body, named 2025 PN7, is traveling in a special ...

For the next half-century, Earth will have a new celestial companion. A small asteroid, officially designated 2025 PN7, has been confirmed as a quasi-satellite—a rare type of near-Earth object that ...

For more than 25 years, humans have lived and worked continuously aboard the International Space Station, conducting research ...

A NASA mission has spotted an Earth-size exoplanet orbiting a small star about 100 light-years away. The planet, named TOI 700 e, is likely rocky and 95% the size of our world. The celestial body is ...

CAPE CANAVERAL, Fla. (AP) — For the first time ever, astronomers have discovered seven Earth-size planets orbiting a nearby star — and these new worlds could hold life. This cluster of planets is less ...

Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...