On Jan. 31, 1958, Explorer 1 became the first satellite launched by the United States. Its primary science instrument, a cosmic ray detector, was designed to measure the radiation environment in Earth ...

In the whole history of Earth's climate, few events are as extreme as those that geologists call "Snowball Earth." ...

The new plot twist is that in order to keep enough nitrogen and phosphorus near its surface, a planet has to start out with ...

Unusual material discovered deep within the center of the Earth are the remains of an ancient planet that collided with Earth billions of years ago, scientists have found. The blobs of strange ...

Tiny zircon crystals are revealing that Earth’s earliest history may have included surprisingly complex tectonic activity.

Our home planet is in a hurry. On June 29, 2022, Earth completed the shortest day since scientists started keeping records in the 1960s, pulling off a full rotation 1.59 milliseconds faster than usual ...