laymanfai4306 laymanfai4306
  • 20-02-2024
  • Physics
contestada

If the nearest star is 4.2 light-years away, then:

a. The star must be very young.
b. The star is 4.2 million AU away.
c. The light we see left the star 4.2 years ago.
d. The star must be very old.

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