Across
- 2. Measure of disorder in a thermodynamic system.
- 9. Science of the universe’s large-scale structure and origins.
- 11. A neutron star with an insanely powerful magnetic field.
- 12. Mysterious force driving cosmic acceleration.
- 13. The stage a star enters before collapsing or shedding layers.
- 16. The “point of no return” around a black hole.
- 17. Fundamental quantum of action in physics.
- 18. A swirling ring of dust and gas forming planets.
- 19. Tiny space debris that can puncture spacecraft hulls.
- 20. Nearly massless subatomic particle that rarely interacts with matter.
Down
- 1. Technique for identifying materials by light absorption/emission.
- 3. The infinitely dense point at a black hole’s center.
- 4. Atmospheric light caused by charged solar particles.
- 5. Catastrophic explosion marking a massive star’s death.
- 6. Extremely luminous galactic nucleus powered by a supermassive black hole.
- 7. Existing or occurring between stars.
- 8. Gravitational sweet spot for spacecraft stability.
- 10. Hypothetical quantum particle of gravity.
- 14. The study of life’s potential beyond Earth.
- 15. A world orbiting a star outside our solar system.