Question

How is light used to study space?

Answer 1

idk

Answer 2

*Facepalm*
@woooooooooowwwww

Answer 3

face palm?

Answer 4

*Facepalm* Read the question

Answer 5

because space is very large and the speed of light is the max. speed we know this time so we use light and use terms like light years etc

Answer 6

@woooooooooowwwww Its HOW light is used to study space.

Answer 7

true, sorry

Answer 8

idk.... @Angel_Halo23

Answer 9

We use the speed of light to calculate how far apart the stars are, and to estimate the size and age of the universe. Speed-of-light calculations are what confirmed that the universe is expanding. And because light takes a certain amount of time to get here, when we look at the stars, we're literally looking back in time, to what the universe was like millions of years ago:

Answer 10

facepalm*

Answer 11

... good job angel :D

Answer 12

:D thnks :D

Answer 13

again it says HOW we use it.
Not why or what