Across
- 1. The study of the universe.
- 2. Particles acquire mass as they travel through this field Down
- 5. A collection of stars held by mutual gravity.
- 7. Distortion of light from a far galaxy by a massive object closer to us (2 words)
- 8. Contains no protons, neutrons and electrons; makes up most of the mass of galaxies and galaxy clusters (2 words).
- 9. A star whose apparent brightness changes predictably with time.
Down
- 1. The largest, most massive, structures in the universe (2 words)
- 3. Describes the evolution of the universe from a singularity (3 words).
- 4. Force responsible for universal expansion (2 words)
- 6. Hypothetical shortcut through spacetime.