How Do We Know The Milky Way Is A Spiral Galaxy?

Описание к видео How Do We Know The Milky Way Is A Spiral Galaxy?

We can clearly see with our telescopes that our nearest galaxy Andromeda is a spiral type galaxy. We can also observe other galaxies and define their shapes as well. But we can't observe the Milky Way as a whole because we are living inside of it.
This is how astronomers know about the shape of the Milky Way.

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Graphic and credits:
Space Engine
NASA/ESA and The Hubble Heritage Team (STScI/AURA)
Ken Crawford

Music:
Puddle of Infinity - Smile Quiet Looking Up

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