Question

redshift and blueshift quick check
when will a scientist observe redshift in the spectrum of a distant space object? (1 point)
○ when the object is in the same frame of reference as the scientist
○ when the object is moving toward the scientist
○ when the object is stationary
○ when the object is moving away from the scientist

Explanation:

Redshift occurs when light waves from an object are stretched, which happens when the object moves away from the observer (scientist). Moving toward causes blueshift; same frame or stationary means no redshift.

Answer:

when the object is moving away from the scientist