jamjamason

jamjamason t1_izhqpbb wrote

Imagine being stuck in the edge of a frisbee. What would your view of the world look like? We can guess at the shape of the milky way because we can see that the density of stars around us is concentrated in a disc shape. And as ground based and space based telescopes get better, we get better at measuring the density of stars in different directions and distances, which improves our understanding of the shape of our galaxy.

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