You are studying a very distant quasar and are trying to determine how far away it is. The quasar isa very bright point-like light source, and there is only one relevant distance measuring techniqueapplicable to objects at such a great distance. From a spectra of the quasar, you observe that it'sLyman alpha emission line (which would be at 121.6 nm in a laboratory sample of Hydrogen) is at130 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 theuniverse. You will need to look up a special constant (who's value is uncertain) to complete thisproblem. The answer accounts for the possible range of uncertainty in the quantity you need tolook up.]

Given, λo = 121.6 nmλob = 130 nm

Answered: You are studying a very distant quasar…

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