redshift
US /ˈred.ʃɪft/
UK /ˈred.ʃɪft/
名詞
紅移
a displacement of the spectrum of an astronomical object toward longer (red) wavelengths, typically indicating that the object is moving away from the observer
範例:
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Astronomers use redshift to determine how fast a galaxy is receding from Earth.
天文學家利用紅移來確定星系遠離地球的速度。
•
The redshift of light from distant stars is evidence for the expansion of the universe.
來自遙遠恆星光線的紅移是宇宙膨脹的證據。