Consider a positively curved universe containing only matter (the "BigCrunch" model discussed in Section 5.4.1). At some time to lerunch/2,during the contraction phase of this universe, an astronomer named Elb-buh Niwde discovers that nearby galaxies have blueshifts (-1 < 0)proportional to their distance. He then measures Ho and S2o, finding Ho < 0and 20 > 1. Given Ho and So, how long a time will elapse between Dr.Niwde's observations at t = to and the final Big Crunch at t =5.7terunch?What is the highest amplitude blueshift that Dr. Niwde is able to observe?What is the lookback time to an object with this blueshift?

1) how long until he big crunch 2)highest amplitude blue shift that Dr. is able to observe 3)…

Answered: Consider a positively curved universe…

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