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Why Does Light From Distant Stars Show Us the Past?
š” The Answer
- Light travels at a finite speed of about 300,000 kilometers per second, so the light from a star takes time to reach us.
- For example, the light from the Sun takes about 8 minutes to travel to Earth, meaning we see the Sun as it was 8 minutes ago.
- When observing a galaxy 10 billion light-years away, we see it as it was 10 billion years ago, shortly after the Big Bang.
- This cosmic time machine allows astronomers to study the history and evolution of the universe by looking at light from distant objects.
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1922 ā A referendum in Rhodesia rejects the country's annexation to the South African U
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