Redshift is the phenomenon where light from an object is shifted towards longer wavelengths as the object moves away, indicating its velocity relative to the observer.
Overview
Types Of Redshift
What Is Redshift
Measuring Redshift
Redshift In Astronomy
Applications Of Redshift
Famous Observations Of Redshift
The Doppler Effect And Redshift
Redshift And The Expanding Universe
Christian Doppler
Big Bang Theory
Edwin Hubble
Astronomy
Blueshift
Universe
Big Bang
Formula
Black
๐ Redshift occurs when the light from an object is stretched to longer wavelengths as it moves away from the observer.
๐ The greater the distance an object is from Earth, the more redshifted its light appears.
๐ Hubble's Law states that the velocity of a galaxy moving away is proportional to its distance from us, implying redshift.
๐ Redshift can be used to determine how fast an object in space is receding due to the expansion of the universe.
๐ There are three types of redshift: cosmological, gravitational, and Doppler redshift.
โจ Gravitational redshift indicates that light escaping a strong gravitational field is shifted to longer wavelengths.
๐ Doppler redshift occurs due to the relative motion of source and observer, similar to the change in sound of a passing siren.
๐ Extremely distant galaxies can exhibit significant redshift, providing insights into the early universe's conditions.
๐ Redshift is critical in astrophysics for understanding the age and composition of the universe.
๐ฐ The discovery of redshift was instrumental in confirming the Big Bang theory.