The Big Bang Theory Vocabulary

2. the simplest, lightest, and most abundant chemical element in the universe
4. the scientific study of everything in the universe beyond Earth's atmosphere, including planets, stars, galaxies, and comets
5. proving that galaxies exist outside the Milky Way, shattering the belief that our galaxy was the entire universe
10. highly influential American experimental theater director, playwright, and visual artist
13. the cooled remnant of the first light that could ever travel freely throughout the Universe.
16. a huge collection of gas, dust, and billions of stars and their solar systems
17. a light, colorless, odorless, and non-flammable gas
18. German-born theoretical physicist recognized as one of the most influential scientists in history

1. the universe is filled with a uniform background radiation.
3. prominent British astronomer and mathematician who explained how elements are created inside stars (nucleosynthesis)
6. the entire range of all types of light radiation, both visible and invisible, organized by wavelength or frequency.
7. the totality of all existence, comprising all space, time, matter, and energy
8. the segment of the electromagnetic spectrum that the human eye can view
9. the universe expanded rapidly from an extremely hot, dense singularity, marking the origin of space, time, and matter.
11. passes light coming into the telescope through a tiny hole or slit in a metal plate to isolate light from a single area or object
12. the ability to do work or produce change
14. the wavelength of the light is stretched, so the light is seen as 'shifted' towards the red part of the spectrum.
15. an astronomical phenomenon where light from an object moving toward an observer shifts toward shorter wavelengths