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How Galaxies Are Disappearing From Our Universe
StartsWithABang writes: You've heard of dark energy before, and you know that it causes the expansion of our Universe to be accelerating. Instead of slowing down, distant galaxies are speeding up in their recession from us, rendering them unreachable from our point of view. But even though we can't see the light emitted from them today, we can still see the galaxies themselves! This article explains how this works, how no information gets lost, and what it means for the Big Bang.
The photons can't reach us from those distances because the amount of space between the far-off galaxies and us is increasing faster than light can travel.
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