Gallery Walk

Predicted Light would Bend around strong gravity forces

Jan 1, 1919

The force of a strong gravity well, such as a black hole or massive star, is capable of changing the direction of the photons as they pass by the objeect.

Gloluar Clusters have a center of gravity they orbit.

Jul 17, 1919

Dr. Shapley found a center of gravity in many globular clusters that he studied.

Gallery Walk Timeline

Period: Sep 17, 1919 to Sep 17, 2006

Timeline of the mapping of the universe.

Einstein added the cosmological constant to his theory of relativity.

Dec 31, 1919

Redshift discovered in the background of the universe

Jan 1, 1929

Hubble discovered multiple galaxy types

Jul 17, 1929

Spiral, Elliptical and Irregular.

Individual stars found in nebulae

Dec 31, 1929

Cephied Stars

Jan 1, 1955

Two types of supernovae

Jul 18, 1955

Type 1- no hydrogen
Type 2- hydrogen

Images of Andromeda

Dec 31, 1955

Leftover microwave radiation from big bang

Jan 1, 1965

Red shift of light to measure distance of stars

Jun 15, 1965

Galaxies do not give off enough light

Dec 31, 1965

Standard variables to measure distance

Jan 1, 1993

Cepheid variable stars and type 1a supernova

Inflation theory

Jun 15, 1993

Rapid expansion caused background radiation to be equivalent in every direction.

Big bang theory is grounded with fact

Dec 30, 1993

Composition of universe

Jan 1, 2006

Dark matter and dark energy have been discovered

Cosmic Microwave Background

Dec 19, 2006

The remaining radiation from the big bang that has redshifted over millenia