Space Exploration/Sky and space

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Question
Why the sky in the night look dark, even if we know there are almost no place for an empty gap without a star ?

Answer
Hi, Billel, thanks for writing.  That is a question that puzzled astronomers for years.  We now know the universe is expanding, and when something moves away from us, the light frequency decreases and power decreases.  Due to this expansion, the further objects lose power and the sky is overall dark.  Write anytime!

Space Exploration

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Volunteer


Kenneth Renshaw

Expertise

Answer basic space flight questions, research info on specific space flights. Answer questions on astronomy

Experience

Amateur astronomer and avid astronomy/space flight fan for 31 years.

Organizations
Official NASA/JPL Solar System Ambassador for Arkansas and Missouri (one of about 300 nationwide). (http://www2.jpl.nasa.gov/ambassador/profiles/Kenneth_Renshaw.htm)

Publications
Numerous local and area newspapers.

Education/Credentials
AA/BME/MME

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