Across
- 5. a genius, mastermind, or exceptionally intelligent person
- 7. renowned American avant-garde director, playwright, and artist
- 8. the quantitative, conserved capacity of a physical system to perform work, often manifesting as motion, heat, or light
- 10. pioneering American astronomer who revolutionized cosmology by proving galaxies exist outside the Milky Way and discovering that the universe is expanding
- 11. the narrow band of electromagnetic radiation that the human eye can detect, typically spanning wavelengths from about 380 to 750 nanometers
- 14. the decrease in wavelength (and increase in frequency) of light or other electromagnetic radiation from a celestial object that is moving closer to an observer
- 15. renowned British astrophysicist, mathematician, and author
- 16. German-American radio astronomer and Nobel laureate
- 17. the stretching of light wavelengths towards the longer, redder end of the spectrum, indicating an object is moving away from the observer
- 18. the scientific study of everything beyond Earth's atmosphere, including stars, planets, galaxies, and comets, focusing on their motion, composition, and evolution
Down
- 1. the faint, uniform remnant radiation leftover from the Big Bang, representing the earliest "light" in the universe
- 2. A water generator
- 3. the totality of all space, time, matter, and energy in existence
- 4. a massive, gravitationally bound system consisting of stars, stellar remnants, interstellar gas, dust, and dark matter
- 6. a colorless, odorless, tasteless, and nonflammable inert gas
- 9. the entire range of all types of electromagnetic radiation, organized by frequency, wavelength, and energy
- 12. an instrument that separates radiation (such as light or sound) into its constituent wavelengths—a spectrum—and records this data using a camera or detector
- 13. extremely hot, dense singularity approximately 13.8 billion years ago