How do astronomers measure extreme distances?

Spotting objects that are very distant, and finding their distances is fascinating! When we look at the night sky, we get to observe a flat, two-dimensional view. So how do astrophysicists find the huge distances of stars and galaxies from Earth? Yuan-Sen Ting from TED-Ed demonstrates how trigonometric parallaxes, standard candles benefit us in determining the huge distance of objects even numerous billion light years away from Earth.




SOURCE:   TED-Ed
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How do astronomers measure extreme distances? How do astronomers measure extreme distances? Reviewed by Umer Abrar on 12/02/2014 Rating: 5

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