Sound as we know it does not exist in space. That’s because, on Earth, sound mainly travels to our ears via vibrating air molecules. Because space is a vacuum, meaning there is no matter at all ...

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

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 ...

Elephants are the largest land animals on Earth, and they're also one of the most unique-looking animals. With their characteristic long trunks, floppy ears and thick legs, there is no other ...