Across
- 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
Down
- 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