When white light enters a prism it breaks up into colors based on different wavelengths
What is spectrum
100
Theory that assumes a universal expansion starting from an explosion in a very dense and compact stage about 10 to 15 billion years ago.
What is Big Bang theory
200
A galaxy shaped like a round or flattened ball, generally containing only old stars
What is Barred spiral Galaxy
200
Massive groups of old stars that look like spheres or enlongated ovals, have little gas and dust
What is elliptical galaxy
300
Shift of wavelengths to longer lengths caused by objects moving away from a reference point. Similar to the Doppler Effect and sound waves as a car moves further away from you
What is Redshift
300
The brightness that a star would appear to be if it were at a distance of 10pc from sun
What is absolute magnitude
400
A Galaxy with spiral arms connected to a spoke or bar that extends out from the galactic center
What is spiral galaxy
400
The distance that light travels in one year
What is light year
500
A graph that shows the relationship between absolute magnitude and temperature for individual stars
What is Hertzsprung-Russell Diagram
500
Radiation that carries energy through regular variations in its electric and magnetic force. Includes radio waves, infrared and ultraviolet radiation, visible light, x and gamma rays.