Why is the redshift important?

The redshift is an important piece of evidence for the big bang theory. If we look at the visible region on the electromagnetic wave spectrum, we will see there is red light on the left and there is violet on the right. Red light has a longer wavelength than violet light, so this means when a galaxy moves away from us, the wave will 'stretch'. This means the wavelength will increase and galaxy appears red. This is good evidence for the big bang theory, as it can only be explained by the idea that the universe is explanding.

Answered by Laxshana C. Physics tutor

3898 Views

See similar Physics GCSE tutors

Related Physics GCSE answers

All answers ▸

Describe what red shift is and why i provides evidence for the Big Bang Theory.


Why is light refracted when it crosses from air to glass?


explain how a parachutist reaches a constant speed using the concept of terminal velocity.


A plane is entering a turn, identify the main forces acting on it (including central forces)


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences