There's a lot more to Earth than meets the eye. Far from being just a roundish rock barreling through space, our planet is composed of several layers held together by intense forces of gravity. Our ...

The search for life beyond Earth is one of the most profound quests in human history. It began not in laboratories, but in ...

How much do you remember about planet Earth in the news over the last 12 months? Take our quiz to find out! When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

Earth Day began in 1970 and takes place on April 22 every year. Here are 10 questions to test your knowledge of the planet. 1. A day on Earth is 24 hours but it always hasn’t been that way. Are the ...

1. Which two planets are closer to the sun than Earth? 2. The imaginary line through Earth joining the two poles is the -----. 3. By what name is a hole made by a meteor known? 4. What is the ...

New AI features in Google Earth let users ask chatbot-style questions to find changes in the climate. The system could ...

This skywatching quiz will test your knowledge of how eclipses, when to see them, and what makes each one so spectacular.