Astronomy Crossword

An increase/ decrease in the frequency of sound, light. or other waves as the observer moves toward/ away from the light/ sound source.
Step right after expanding in the sequence of formation of the universe.
By studying a stars spectra you can find what it is _____ _____ _____.
The rate in which something (sound or light) is repeated.
All of the frequencies of wavelengths of electromagnetic radiation.
Wavelengths of color given off by visible light.
The distance between two crests or two troughs in a wave.
Thermal energy left over from the original explosion was distributed in every direction of the universe as it expanded.
One of the building blocks of a star with the chemical symbol He.
The universe is made up of ______ _____.
The single point at which the universe started as.
Light/ sound moving towards observer quickly results in a ________-.
The theory that states the universe began with an explosion 13.7 billion years ago.
Law that states the universe is expanding.
An instrument used to break down visible light into a spectrum of colors.
The vertical distance between the crest and the baseline.
Light / sound moving away from observer quickly results in a ________ ____.
all time, energy, and matter.