Astronomers have found evidence that the expansion of the Universe is accelerating. Such acceleration

A. is deduced because distant galaxies are receding faster than expected from the Hubble law.
B. was predicted by the Big Bang model in cosmology.
C. is evidence for a cosmic repulsion related to the cosmological constant of relativity theory.
D. is deduced because nearby galaxies are receding faster than expected from the Hubble law.


Answer: C

Physics & Space Science

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Which rocket would require more fuel?

A) one going from the Moon to Earth. B) one going from Earth to the Moon. C) both the same.

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Which of the following is not an example of condensation at Earth's surface?

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