Author Question: If the redshift of a quasar were 3, at what wavelength would the 486.1-nm line of hydrogen appear in ... (Read 104 times)

Hungry! · **on:** Jul 27, 2018

If the redshift of a quasar were 3, at what wavelength would the 486.1-nm line of hydrogen appear in the quasar's spectrum?

What will be an ideal response?

Question 2

Why do higher-mass stars live shorter lives on the main sequence than lower-mass stars?

a. Higher-mass stars burn through their nuclear fuel faster.
b. Lower-mass stars don't get their energy from that same nuclear fusion source as higher-mass stars.
c. Higher-mass stars have less hydrogen fuel to burn.
d. Lower-mass stars spend a longer time evolving to the main sequence.
e. All of the other choices are false.