Across
- 3. Wave-shift effect named for a 19th-century Austrian physicist (2 words)
- 5. Model: everything began as one dense point that blasted apart 13.8 Ga (3 words)
- 6. Gigantic blast that ends a massive star's life (2 words)
- 7. Stretching of light to longer wavelengths from something moving away (2 words)
- 8. Making of the first H and He nuclei in the Universe's first minutes (3 words)
- 9. Idea that the first stars formed from collapsing gas clouds (2 words)
Down
- 1. Hubble's 1926 idea that galaxies are all moving apart (3 words)
- 2. Rotating flattened disk that matter collapses onto (2 words)
- 4. Glowing ball of gas not yet hot enough for fusion
- 9. Swirling cloud of gas in space