Some 4.6 billion years ago, Earth was nothing like the gentle blue planet we know today. Frequent and violent celestial ...

The 84-foot-diameter space rock—dubbed "2025 XM"—is hurtling through the solar system at a zippy 9,753 miles per hour.

Scientists have long believed that the Moon was formed by a massive object crashing into the Earth. But what was that thing ...

Voyager 1, NASA’s deep-space probe, could soon become the first spacecraft to reach a historic milestone. In November 2026, the probe will be one light-day from Earth.

Earth's inner core, a hot iron ball the size of Pluto, has stopped spinning in the same direction as the rest of the planet and might even be rotating the other way, research suggested on Monday.

Earth's changing spin is threatening to toy with our sense of time, clocks and computerized society in an unprecedented way — but only for a second. For the first time in history, world timekeepers ...

Our planet is in constant flux. Tectonic plates—the large slabs of rock that divide Earth’s crust so that it looks like a cracked eggshell—jostle about in fits and starts that continuously reshape our ...

The 15-year effort by Japan is a model for countries now scrambling to reduce their dependence on Beijing’s critical metals.

Here are 10 exoplanets regarded as the most Earth-like alien worlds discovered to date. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Since the ...

Earth’s climate has fluctuated through deep time, pushed by these 10 different causes. Here’s how each compares with modern climate change. Earth has been a snowball and a hothouse at different times ...

Recently, a team of researchers led by Prof. DU Zhixue from the Guangzhou Institute of Geochemistry of the Chinese Academy of ...