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Everything you could want to know about our home planet, Earth. When it comes to astronomical subjects for videos, I don't ...

We have a big round sun and a beautiful round Earth and a round Mars,' the expert ... and we should embrace that as we understand why our planet isn’t flat.' Also on Tuesday, a new study ...

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 ...