Complete Clue List
Across
1. Not a wuss, but a WIMP in astronomy is a weakly interacting ___ ___ (7, 8)
9. Emitting light or heat
10. Harmonious sounds produced by singing or instruments
11. Greek muse of astronomy
12. Sally Ride's university
13. Province of China, site of astronomical observatory
15. Extraordinarily great like the night sky
18. Luminous circle or halo parallel to the horizon
19. Protein that functions as a catalyst
21. Biblical King of Israel or a five quart wine bottle
23. Plant based sugar substitute
26. Spaceship returning back to Earth's atmosphere
27. A celestial body orbiting a star outside the solar system
28. Done in a way to avoid attention
Down
1. Speedy inner planet
2. Most distant planetoid to orbit the sun
3. Appearing dead, not moving
4. Most massive dwarf planet in the Solar System
5. Unit of length for expressing wavelengths
6. Fictional meerkat or a Greek philosopher
7. Science dealing with the nature of the universe
8. Currency of Cape Verde (plural)
14. Polaris (5, 4)
16. Italian Multi-Purpose Logistics Module named for a sculptor
17. A conducting wire found in a light bulb
18. 3.26 light years (plural)
20. Precisely
22. Irish chemist famous for a law about the pressure and volume of a gas
24. The solar system's hottest planet
25. Dutch astronomer with a namesake 'cloud' beyond the Kuiper Belt