Across
- 1. – A temperature scale starting at absolute zero.
- 5. Matter – Mysterious substance that doesn’t emit light but has gravity.
- 7. – A pulsating star used to measure cosmic distances.
- 11. – A dimension in which events occur in sequence.
- 15. – The force governing electric and magnetic interactions.
- 16. Bang Theory (Model) – The leading explanation for the universe’s beginning.
- 17. – The distance light travels in a year.
- 18. Density – The precise amount of matter needed for a flat universe.
- 19. – The apparent shift in an object’s position due to different viewpoints.
- 20. – A measure of heat energy in a system.
- 22. Space Telescope – A famous orbital observatory providing deep-space images.
- 23. (First Law) – Energy cannot be created or destroyed, only transferred.
- 24. – The study of the universe’s origin and structure.
Down
- 2. Fusion – The process powering stars by combining atomic nuclei.
- 3. – A pair of equal and opposite electric or magnetic charges.
- 4. – A lengthening of light waves as objects move away.
- 6. – A mirror-image counterpart to regular matter.
- 8. Fireball – A hot, dense state of the early universe.
- 9. Era – A cosmic period dominated by ordinary particles.
- 10. – A point of infinite density at a black hole’s core.
- 12. Background Radiation – The afterglow of the Big Bang.
- 13. – An instrument that measures light intensity.
- 14. Shift – The change in frequency of waves due to motion.
- 16. – A shortening of light waves as objects move closer.
- 21. – A rapid expansion of the universe just after the Big Bang.