Across
- 1. – Radiation left over from the Big Bang
- 4. – Neutron stars with extremely strong magnetic fields
- 7. – Hypothetical form of matter not directly observable
- 9. – Comets that originate from outside the solar system
- 10. – Extremely bright and distant objects powered by black holes
Down
- 2. – Intense bursts of gamma radiation from space
- 3. – Planets not bound to any star
- 5. – Dense remnants of supernova explosions
- 6. – Regions of spacetime with gravitational pull so strong that not even light can escape
- 8. – Highly magnetized, rotating neutron stars