Discover interesting facts about how big earthquakes can get, why earthquakes happen, and why they're so hard to predict.

The head of planetary defense at the European Space Agency discusses 2024 YR4, an asteroid with a small chance of striking Earth eight years from now.

Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...

The inner core of Earth may have changed shape in the past 20 years, according to a group of scientists. The inner core is ...

Brr! But in sunlight near Earth, temperatures can swing to a boiling 250 degrees Fahrenheit. That's why astronauts wear reflective white spacesuits. Unimpeded, light can move at 299,792,458 meters ...

Scientists of course cannot cut into Earth and directly observe its insides. Instead, their knowledge is inferred from the ...

A collection of down-to-Earth facts about our planet and its place in the solar system. This collection introduces the Sun as the main source of light and heat on Earth. It explains that the Earth ...