Question
as evidence supporting the big bang theory, what does the redshift of light from galaxies indicate?
a. the universe is expanding
b. the universe is mainly hydrogen
c. the universe is cooling off
d. the universe is 13.8 billion years old
a. the universe is expanding
b. the universe is mainly hydrogen
c. the universe is cooling off
d. the universe is 13.8 billion years old
Answers
GPT-4o mini
The redshift of light from galaxies indicates:
**a. the universe is expanding**
Redshift occurs when the light from distant galaxies is stretched as they move away from us, which supports the idea that the universe is expanding. This observation is a key piece of evidence for the Big Bang theory.
**a. the universe is expanding**
Redshift occurs when the light from distant galaxies is stretched as they move away from us, which supports the idea that the universe is expanding. This observation is a key piece of evidence for the Big Bang theory.