Answered

What source of data leads us to believe that the cosmological constant is not equal to zero?

A. Galaxy clusters
B. Cosmic microwave background
C. Supernovas
D. Cepheid variable stars



Answer :

GinnyAnswer

Final answer:

Supernova data and galaxy clusters provide evidence that the cosmological constant is not equal to zero.


Explanation:

Supernova data and galaxy clusters provide evidence that the cosmological constant is not equal to zero. Supernova data show that the acceleration of the universe's expansion is not consistent with a zero cosmological constant, indicating that it is definitely positive. Additionally, the Sunyaev-Zel'dovich (SZ) effect observed in galaxy clusters supports the idea that the cosmological constant is not zero.


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