Space

4. one of the two days in the year when day and night are of equal length
7. a single journey along an orbital path
8. a collection of stars and planets and everything in it
9. a very large ball of burning gas in space that is usually seen from the earth as a point of light in the sky at night
10. rocky remnants orbiting the sun made of rock and/or metal
12. summer solstice is the day of the year with the most hours of daylight, and the winter solstice is the day of the year with the fewest hours of daylight
13. a large piece of rock or metal from space that has landed on Earth
14. a group of stars in the sky that create a picture in the night sky
16. are cosmic snowballs of frozen gases, rock and dust, with a long tail that travel the Sun

1. curved path in space that is followed by an object going around and around a planet, moon, or star
2. all of space and everything in it
3. a large hole in the ground of a planet or the moon, caused by something hitting it (a meteorite)
5. a piece of matter from outer space that enters the earth's atmosphere, often as a streak of light
6. a star (sun) and the objects that orbit around it
7. a single turn around an axis
10. the study of stars, planets, and space
11. on Earth, seasons result from Earth's tilt and orbit around the Sun resulting in the change of the weather and amount of daylight
15. an imaginary line about which a body (Earth) rotates