Stars

2. a small very dense star that is typically the size of a planet.
5. relating to the universe or cosmos, especially as distinct from the earth.
7. the branch of science which deals with celestial objects, space, and the physical universe as a whole.
9. when the ski is very dark
10. a star showing a sudden large increase in brightness and then slowly returning to its original state over a few months.
12. a small, old, relatively cool star.

1. the chemical element of atomic number 2, an inert gas which is the lightest member of the noble gas series.
3. a very large star of high luminosity and low surface temperature. Red giants are thought to be in a late stage of evolution when no hydrogen remains in the core to fuel nuclear fusion.
4. relating to a galaxy or galaxies, especially the Milky Way galaxy.
6. the star around which the earth orbits.
8. a colorless, odorless, highly flammable gas, the chemical element of atomic number 1.
11. a region of space having a gravitational field so intense that no matter or radiation can escape.