The curious minds at What If investigate whether it is possible to fit another Earth in our solar system, revealing orbital ...

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

For anyone curious about what it's like to stand on another planet, Earth offers a few convincing previews. Mars may be 140 ...

Nitrogen, upon which all life on Earth depends, may hold the key for explaining how early life on the planet evolved and how it could evolve on other planets.

Our planet is unique for its ability to sustain abundant life. From studies of the rock record, scientists believe life had already emerged on Earth at least 3.5 billion years ago and probably much ...

Astronomers have long searched for life within a rather narrow ring around a star, the "habitable zone," where a planet ...

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

USA Rare Earth has big plans, but the final step in the plan could be years away from completion.

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

This episode is brought to you by the Music for Scientists album! You probably know about the geomagnetic field that protects the earth from solar storms and radiation. But precision satellites have ...

Close to the summit of an underwater mountain west of the Mid-Atlantic Ridge, a jagged landscape of towers rises from the ...

Social media users shared a cosmic claim about an alleged secret NASA document named "Project Anchor" leaking online in 2024.