Across
- 2. A colourless, odourless and highly flammable hydrocarbon gas.
- 4. The totality of all space, time, matter, and energy.
- 6. An astronomical event that occurs when the moon or a planet moves into the shadow of another body or has a different body pass in front blocking light from reaching it.
- 7. An object that orbits a larger body in space.
- 10. Energy that travels through space.
- 12. A shape defined by a flattened circle with two focal points.
- 13. A small solar system body made of frozen gases, dust, and rock that orbits the Sun that also leaves behind two trails: an ion trail and a ice trail.
- 14. Rocky or metallic remnants left over from the formation of our solar system.
Down
- 1. Tiny solid grains of matter that float in space.
- 3. A layer of gases surrounding a planet held in place by gravity.
- 5. A visual representation of celestial bodies or distances.
- 8. The invisible force that pulls objects with mass toward each other.
- 9. An object that has once in its life orbited something.
- 11. A luminous interstellar cloud often acting as a star-forming region or a remnant of a dying star.