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Home Q & A Board Science-Related Homework Help Physics Astronomy
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hussainizzle hussainizzle
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2 months ago

Suppose that SETI researchers discovered a radio signal coming from a star in the direction of the centre of the Milky Way that was about 10% closer to the centre than the Sun. If humans sent a reply to this signal immediately, and the aliens replied when they got our message, how long would it take before the alien reply reached Earth?



▸

a few years



▸

several decades



▸

thousands of years



▸

a few hundred years

Textbook 
ASTRO

ASTRO


Edition: 3rd
Authors:
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inhibitor128inhibitor128
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2 months ago
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hussainizzle Author
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2 months ago
This site is awesome
acaruso
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Yesterday
Good timing, thanks!
Fanmkreyol
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2 hours ago
this is exactly what I needed
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