Please only Answer if you are 100% positive! This is my third timeposting this q

Question

Please only Answer if you are 100% positive! This is my third timeposting this question becuse they were both wrong on the other trys! Thank you

6. [4pt]

Another explanation for the Universe it the Steady State Hypothesis. The Steady State Hypothesis says that the Universe has always existed and is infinite in extent. Which of the following support the Big Bang Theory and which support the Steady State Model.
(Select B-Big Bang Theory, S-Steady State Model, If the first is B and the rest S, enter
BSSSSS).  

A) The measurement of the microwave background radiation.
B) A measurement that shows the density of the Universe is close to the critical density.
C) The measurement of redshifts that show galaxies appear to be moving away from each other and the Universe is expanding.
D) Observing that galaxies at very large distances look identical to those in the nearby universe.
E) An observation that some globular clusters show M-type stars that have evolved off the main sequence.

4. [4pt]
Choose the correct statements from the following list referring the possible futures of a Universe that does NOT contain Dark Energy. (Give ALL correct answers, i.e., B, AC, BCD...)

A) At present the visible matter in the Universe is only about 1 percent of the mass needed to reach the critical density.
B) The critical density is equivalent to only six atoms of hydrogen in a volume the size of a typical closet (about one cubic meter).
C) If the density of the Universe is found to be greater than the critical density, the big bang theory must be incorrect.
D) The critical density is the density needed to cause the Big Bang.
E) Probably the ultimate fate of the Universe will be to collapse into a series of large black-holes.
F) If the density of the Universe is less than the critical density the Universe will eventually collapse into a big crunch.
G) It is possible the Universe has undergone a series of big bangs, expansions and contractions.

Explanation / Answer

6] A]

Measurement of the microwave background radiation suggests that the big bang model is correct as the highly energetic light emerging from the time scales of the big bang have now reached us as low energy microwaves.

B] A universe with critical density is said to be flat and it is the density required by the universe to halt its expansion. Therefore, this validates the Steady-State model.

C] The redshifted galaxies support the big bang model since the expanding universe implies that the universe has expanded from something smaller hence implying an event like big bang.

D] Observing that the galaxies at very large scales look identical everywhere implies that the density of the universe has not changed hence supporting the steady-state model.

E] M-type Stars in a globular cluster indicates a big bang model.

therefore, the answer is: BSBSB.

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