You are studying a very distant quasar and are trying to determine how far away it is. The quasar is a very bright point

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You Are Studying A Very Distant Quasar And Are Trying To Determine How Far Away It Is The Quasar Is A Very Bright Point 1 (37.85 KiB) Viewed 40 times

You are studying a very distant quasar and are trying to determine how far away it is. The quasar is a very bright point-like light source, and there is only one relevant distance measuring technique applicable to objects at such a great distance. From a spectra of the quasar, you observe that it's Lyman alpha emission line (which would be at 121.6 nm in a laboratory sample of Hydrogen) is at 130 nm. What is the distance to this quasar in units of Mpc. [Hint: Think about what distance measuring technique we use for the very farthest objects in the universe. You will need to look up a special constant (who's value is uncertain) to complete this problem. The answer accounts for the possible range of uncertainty in the quantity you need to look up.]