Space Crossword Puzzle

2. the "ovalness" of an orbit
3. large ball of superheated gas that gives off all the energy a planet needs
9. 186,000 mi/s
10. elongated closed curve that describes Earth's yearlong orbit around the Sun
13. either of the two celestial points at which the celestial equator intersects the ecliptic either of two times of the year when the sun crosses the plane of the earth's equator and day and night are of equal length
15. shape of a planet's orbit with 2 foci
16. made up of the Sun and all planets, moons, comets, and asteroids
17. optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece
20. the cosmic explosion that is hypothesized to have marked the origin of the universe
22. optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
23. is the branch of astrophysics that studies the origin and evolution and structure of the universe
24. is a group of stars that form a pattern in the sky

1. the amount by which a propagating wave is bent/bending a ray of light
4. path described by one celestial body in its revolution about another
5. when an object orbits around a star
6. the entire frequency range of electromagnetic waves
7. a large group of stars, dust, and gas that is held together by gravity and can be elliptical, spiral, or irregular
8. a magnifier of images of distant objects
11. a large ball of rock that rotates mainly in the asteroidbelt between Mars and Jupiter
12. high-frequency radiation very high energy levels harmful to plants and animals
14. the distance light can travel in one year
17. when a planet turns on its axis
18. a ball of ice with no orbit that generates a "tail" because of solar wind
19. the study of the universe beyond Earth, including the sun, moon, planets, and stars
21. the galaxy also a candy bar