EarthSky What do redshifts tell astronomers?
Redshifts reveal how an object is moving in space, showing otherwise-invisible planets and the movements of galaxies, and the beginnings of our universe.
Cog, development, energy, gear, lightning, thunder, wheel icon - Download on Iconfinder
Universe - Wikipedia
EarthSky The ecliptic is the path of the sun
EarthSky X-rays reveal the violent side of the universe
Redshift, Definition & Facts
ST/ Super-Earths discovered orbiting nearby red dwarf, by Paradigm, Paradigm
Stellar insanity near the center of the Milky Way (when you apply
Astronomy, Definition, Branches & History - Lesson
Redshift, Definition & Facts
Demonstrating Energy Levels of Atoms Physics and mathematics, Physics classroom, Energy level
Black Holes in Quasars Spin Fast by Ken Croswell
The Sunday Letter #23: Patterns - by Amanda Leduc