Across
- 2. The closest distance a moon can orbit a planet before being torn apart by tidal forces
- 8. The contradiction between high probability of extraterrestrial life and lack of evidence
- 11. Highly energetic and distant active galactic nucleus
- 12. Rotating neutron star emitting beams of radiation
- 14. Radiation leftover from the Big Bang
- 15. Icy bodies surrounding the solar system
Down
- 1. Remnant of a supernova explosion, extremely dense
- 3. Radiation emitted by black holes due to quantum effects
- 4. The imbalance between matter and antimatter in the universe
- 5. Hypothetical dark matter particle
- 6. The epoch when the universe transitioned from opaque to transparent
- 7. Hole A rotating black hole with angular momentum
- 9. Hypothetical particle. proposed as a dark matter candidate
- 10. The rate of expansion of the universe
- 13. Facility that detected gravitational waves