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doit_the_clown doit_the_clown
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7 years ago
An inhabitant of a planet orbiting the star Betelgeuse observes the flash from the first nuclear weapon on the Earth, exploded in July 1945. If this extraterrestrial being were to send a signal to the Earth immediately to confirm this sighting by exploding a bomb of equivalent brightness, and astronomers on the Earth were watching his planet, when would they expect to see this flash?
   A)  2076 A.D.    B)  2207 A.D.    C)  2799 A.D.    D)  2372 A.D.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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hyponoticahyponotica
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7 years ago
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doit_the_clown Author
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7 years ago
Helped a lot
kh540941
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Yesterday
Good timing, thanks!
asd454512
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2 hours ago
Correct Slight Smile TY
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