Submitted by crazunggoy47 t3_11fkfeq in askscience
summitrow t1_japc8y4 wrote
Reply to comment by Hudimir in Why do cosmologists say that gravity should "slow down" the expansion of the universe? by crazunggoy47
Yes light cannot escape them, which is because of the incredibly strong gravity well of a black hole.
The very recent articles on black holes and dark energy are very speculative.
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