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The object is moving away from the observer.
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How do they measure what?
Later polish astronomers
Astronomers label the stars within constellations according to apparent magnitude.
The object is moving away from the observer.
They can do so by examining the light from the star. Doppler shift can indicate this
I don't think that "refreshing" is a common term in astronomy. If you mean "redshift", please ask a separate question.
Astronomers indicate the probability of us all really going to be sucked into a black hole to be quite low.
All astronomers are scientists.All astronomers are scientists.All astronomers are scientists.All astronomers are scientists.
Mainly astronomers. But cosmologists and astrophysicists will also be interested in outer space.
amateur astronomers and astronomers
astronomers.
people who study about the universe are called astronomers
Juno was the third asteroid to be discovered by astronomers early in the 19th century.
Saint Dominic is the patron saint of astronomers
88 constellations are recognized by astronomers.