Across
- 5. The process of a celestial body appearing to move backward in its orbit
- 6. A massive burst of solar wind and magnetic fields from the Sun
- 8. A natural satellite that orbits an asteroid
- 9. A magnetic storm on the Sun's surface
- 10. A rare alignment of celestial objects in a straight line
Down
- 1. The dark areas on the Moon's surface
- 2. The collision of two neutron stars
- 3. A violent explosion marking the death of a massive star
- 4. A temporary darkening of a star caused by an orbiting planet
- 7. The appearance of a second, dimmer moon next to the Earth's moon