You may have heard that it takes 8 minutes for light from the sun to reach the Earth. That's because, as fast as light is, it still takes time to get to where it's going. So if it's 8 minutes from the nearest star to us, then how long does it take for light from more distant stars to reach our eyes? And if the light really takes so long to get to you, then is what you're seeing what's really there, or only what used to be there?
A Window To The Past
What's There, What's Not
Measuring The Speed Of Light
Hubble's Extreme Deep Field Sees Farther Back In Time
How Far Back Are We Looking in Time?
Written by Curiosity Staff April 4, 2017
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