How do you navigate in space?
CrowdScience
00:00
The Socal Principle of Parallax
Parallax is essentially a way of measuring a distance to an object without getting out a take measure and lying it down on the ground between you and the object. So what we rely on is having a map of the positions of the stars in the sky as seen from the earth. We can use this measure of the parallax to determine how far our spacecraft has moved.
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