Welcome to the Science Mondays segment! Each week here on Geek Alabama, Science Mondays will feature stuff from the world of science and science related content. Our goal here at Geek Alabama is to hopefully have you learn something useful and fulfilling. Science is a geek’s best friend, and we love featuring science content here at Geek Alabama.

How do we know the Earth isn’t flat? For thousands of years people have known the Earth is round. Ancient civilizations used the stars and shadows to figure it out. Mariners confirmed it by sailing around the globe. And when the space age began, we saw it with our own eyes — the Earth is round!

A NASA scientist explains how we’ve known for centuries that our planet is a sphere.

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