Question

Which information best supports the idea that the universe began with rapid expansion?

O Measurements of cosmic microwave background radiation
O Measurements of rates of decay
O Calculation of the temperature and brightness of stars
Calculations of the distance from the sun to each planet

Answer 1

Answer

I believe it’s A.

Explanation

Because the cosmic microwave background (CMB) is thought to be leftover radiation from the Big Bang, or the time when the universe began
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The Cosmic Microwave Background radiation, or CMB for short, is a faint glow of light that fills the universe, falling on Earth from every direction with nearly uniform intensity.

Answer 2

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