When will a scientist observe redshift in the spectrum of a distant space object?(1 point)

Responses

when the object is in the same frame of reference as the scientist
when the object is in the same frame of reference as the scientist

when the object is stationary
when the object is stationary

when the object is moving away from the scientist
when the object is moving away from the scientist

when the object is moving toward the scientist

A scientist will observe redshift in the spectrum of a distant space object when the object is moving away from the scientist.

None of the above options are correct. A scientist will observe redshift in the spectrum of a distant space object when the object is moving away from the scientist.

When a scientist observes redshift in the spectrum of a distant space object, it means that the object is moving away from the scientist. Redshift is a phenomenon in which the light emitted from an object stretches out, causing its wavelength to increase. This occurs when an object is moving away from an observer. The greater the distance, the greater the redshift. Therefore, to observe redshift, the object needs to be moving away from the scientist.