The Earth in space.

2. the layers of air that sorround the Earth.
6. a scientist who studies celestial objects and phenomena in the universe, such as planets, stars, galaxies, and black holes.
9. our cosmic neighborhood: a gravitationally bound system comprising the Sun and everything that orbits it.
13. the way in which heat moves through space, as waves.
16. the path planets take around the Sun.
17. a smooth, closed oval-shaped curve.

1. an optical or electronic instrument designed to gather and focus light from distant objects.
3. Earth's only natural satellite and the brightest object in our night sky
4. our home planet and the third planet from the Sun
5. spinning motion dictates the length of a "day" and is responsible for the cycle of day and night.
7. the changes that we see in the shape of the moon through the month.
8. the study if the Sun, Moon, stars, planets and other objects in space.
10. the star at the center of our Solar System
11. an event in which the Moon or the Earth blocks out light from the Sun.
12. ancient cosmic bodies made of dust, rock, and frozen gases.
14. small, rocky, or metallic objects that orbit the Sun
15. the long-term, human-driven rise in Earth's average surface temperature.