Across
- 2. A remnant of a massive star that has exploded
- 5. A rapidly spinning neutron star emitting beams of radiation
- 6. The point where a planet is closest to the Sun in its orbit
- 7. The hypothetical form of matter that makes up most of the universe's mass.
- 8. The coldest place in the universe, located in the Boomerang Nebula.
Down
- 1. The outermost layer of the Sun’s atmosphere.
- 3. The closest star system to the Sun
- 4. The first artificial satellite launched into space