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.

The spectral lines from a galaxy are shifted towards the red end of the spectrum. Which statement is true?Group of answer choicesthe galaxy is not movingthe galaxy is moving towards usthe galaxy is moving away from usthe galaxy is cooling

Which of the following indicates that the universe is expanding? aThe spectra of Cepheid variables, which are found in all galaxies, are red shifted. bThe spectra of Cepheid variables, which are found only in our galaxy, are red shifted. cThe spectra of Cepheid variables, which are found in all galaxies, are blue shifted. dThe spectra of Cepheid variables, which are found only in our galaxy, are blue shifted.

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

A distance galaxy is moving away from us at a speed of 47380367 m/s. For hydrogen gas in this galaxy, calculate the wavelength (in nm) to one decimal place of the hydrogen alpha line as observed here on earth. Note: This wavelength emitted by hydrogen is measured in the first year physics lab to be 656.2 nm.

What spectral anomaly is shown by the distant galaxy?