Ask Question
26 October, 21:33

A major piece of evidence supporting the Big Bang

theory is the observation that wavelengths of

light from stars in distant galaxies show a

(1) redshift, appearing to be shorter

(2) redshift, appearing to be longer

(3) blueshift, appearing to be shorter

(4) blueshift, appearing to be longer

+5
Answers (1)
  1. 27 October, 00:46
    0
    Electromagnetic radiation from stars in distant galaxies shows

    a "red-shift", that is, a shift that makes the wavelengths appear

    to be longer than they really should be.

    The real trick to this kind of observation is figuring out what the

    wavelengths you observe really should be, since you only see them

    in their shifted condition.

    The only process we know of that can make wavelengths longer

    is when the source of the waves is moving away from the observer.

    So we assume that this is the cause of all the radiation from distant

    galaxies having its wavelengths stretched, and this leads us to the

    concept that the universe is expanding. There's no way to prove it,

    so the expanding universe is "only a theory" ... just like gravity and

    elliptical orbits and nuclear fusion, which also can't be proven.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A major piece of evidence supporting the Big Bang theory is the observation that wavelengths of light from stars in distant galaxies show a ...” in 📙 Geography if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers