| Astronomy and Astronomers |
| Astronomers |
| Astronomy |
| The universe is a big place...so big in fact that light from its outer reaches now being emitted will take billions of years to get here. Or you could say it another way: that light we now see from distant galaxies and quasars is billions of years old...emitted at a time in the past long before the Sun or the Earth were here.... Cool! |
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