Two Bright Objects Reveal Early Black Holes
Their light shows a much younger universe.
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to the and . A is a by a .
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In this lesson: Identify the observing tools and distinguish the observed epoch from the present.
Grammar in this story: Looking back with as it was
as it was
As it was indicates a past state that we observe through old light. It does not claim the pair has stayed unchanged until today.
Your turn
Explain what powers a quasar and why this pair interests scientists.
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Gas falling towards a large black hole powers a bright region called a quasar. We see this pair about 900 million years after the Big Bang, and scientists are studying how its black holes grew so large so early.
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