Question

Drag and drop the words into the correct locations.(2 points)
Put responses in the correct response input area to answer the question. Select a response, navigate to the desired input area and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Two astronomers accidentally discovered Press enter key to drop response here.Two astronomers accidentally discovered, Enter response container 1, which is evidence of universe expansion that supports the Big Bang theory, which is evidence of universe expansion that supports the Big Bang theory. This is particularly strong evidence because its temperature is Press enter key to drop response here.This is particularly strong evidence because its temperature is, Enter response container 2. By observing this today, we can see what the universe looked like Press enter key to drop response here.By observing this today, we can

Answer 1

1) the cosmic microwave background (CMB) — discovered by Penzias and Wilson
2) about 2.7 K (≈3 K)
3) about 380,000 years after the Big Bang (shortly after the Big Bang)