In observing a star, cosmologists note a blue shift. What does this mean?*1 pointThe star is very coolThe star is very hotThe star is moving towards usThe star is moving away from us

While examining the spectrum of a galaxy you find all the hydrogen lines are shifted to longer wavelengths. This galaxy isGroup of answer choicesmoving away from us.moving towards us.expanding explosively.not forming new stars.blue shifted.

When looking at distant stars, the scientist from Question 9 observed that the stars were ____________ which indicated they were moving away rapidly.dca291d92a49a1fef44bdc0d30263210.webm126 KB ablue shifted bgreen shifted cyellow shifted dred shifted

If the spectrum of a star is red shifted, it is moving away from you. True False

The amount of shifting (red or blue) depends on the speed between the light source and Earth.

How did Hubble know that the galaxies he observed were moving away from us? aThe spectra of the stars were red-shifted which indicates they were moving away rapidly. bThe spectra of the stars were blue-shifted which indicates they were moving away rapidly. cThe spectra of the stars were violet-shifted which indicates they were moving away rapidly. dThe spectra of the stars were green-shifted which indicates they were moving away rapidly.