Biology
Biology, 05.05.2020 14:13, meramera50

Which of the following indicates that the universe is expanding?

Question 21 options:

The spectra of Cepheid variables, which are found only in our galaxy, are red shifted.

The spectra of Cepheid variables, which are found in all galaxies, are red shifted.

HELP!!! The spectra of Cepheid variables, which are found only in our galaxy, are blue shifted.

The spectra of Cepheid variables, which are found in all galaxies, are blue shifted.

answer
Answers: 3

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Which of the following indicates that the universe is expanding?

Question 21 options:

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