If we say that a galaxy has a lookback time of 1 billion years, we mean that _________.

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asked Apr 5, 2023 27.4k views

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If we say that a galaxy has a lookback time of 1 billion years, we mean that _________.

Physics
high-school

Krzysztof Antosik asked

by Krzysztof Antosik

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Answer:

its light traveled through space for 1 billion years to reach us

Step-by-step explanation:

Danie answered Apr 9, 2023

by Danie

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