The Big Bang Theory Vocab

4. revolutionized astronomy by proving the universe extends beyond the Milky Way and is actively expanding. By analyzing light spectra, he discovered that distant galaxies are moving away from Earth
7. an American astronomer who, with Arno Penzias, won the 1978 Nobel Prize in Physics for discovering the Cosmic Microwave Background (CMB) radiation
9. the sum total of all space, time, matter, and energy,
10. a massive, gravitationally bound system consisting of stars, stellar remnants, interstellar gas, dust, and dark matter
14. the entire range of light radiation, spanning from long-wavelength, low-energy radio waves to short-wavelength
15. the natural science that studies celestial objects, phenomena, and the universe beyond Earth's atmosphere
17. the capacity to do work, cause change, or move matter
18. light or other electromagnetic radiation from an object, moving closer

1. Cosmological model explaining that the universe began 13.8 billion years ago
2. Stretching of light waves, longer-wavelength
3. a prominent British astrophysicist who pioneered the theory of stellar nucleosynthesis
5. the simplest, lightest, and most abundant element in the universe, from of one proton and one electron
6. Segment of the electromagnetic spectrum that the human eye can view
8. Faint uniform afterglow radiation
11. a theoretical physicist who revolutionized science by redefining fundamental concepts of space, time, gravity, and energy
12. a colorless, odorless, non-toxic, and inert noble gas
13. accidentally discovered the Cosmic Microwave Background (CMB) radiation, the "afterglow" of the Big Bang
16. an instrument that splits light into its component wavelengths