Space

2. the angle between the Earth at one time of year, and the Earth six months later, as measured from a nearby star
4. the earth is at the center of the universe, and the planets, the sun and the moon, and the stars circle around it
5. the representation of the moon's journey around the Earth
9. an imaginary line drawn around the earth equally distant from both poles, dividing the earth into northern and southern hemispheres and constituting the parallel of latitude 0°
10. a ball of ice and dust that orbits the Sun
13. the time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of approximately equal length
14. an eclipse in which the moon appears darkened as it passes into the earth's shadow
16. has a progressively smaller part of its visible surface illuminated, so that it appears to decrease in size
18. the curved path of a celestial object or spacecraft around a star, planet, or moon
19. composed mainly of hydrogen and helium, four outermost planets in the solar system
20. the time or date (twice each year) at which the sun reaches its maximum or minimum declination, marked by the longest and shortest days

1. the moon at any time after the new moon and before the full moon, when the illuminated area is increasing
3. has a compact, rocky surface, the four innermost planets in the solar system
6. a streak of light in the sky that appears when a meteoroid burns up upon entering Earth's atmosphere
7. an eclipse in which the sun is obscured by the moon
8. the earth is at the center of the universe, and the planets, the sun and the moon, and the stars circle around it
11. an imaginary line about which a body rotates
12. orbits the sun, hasn’t cleared orbit, nearly round shape
15. small rocky object that orbits the Sun
17. orbits a star, has enough mass to be forced into a sphere, clears nearby objects from orbit with its gravity