Solar System and Beyond

2. What percentage of the moon is lit by the Sun?
7. A flat two-dimensional plane where a space object is at any point in its orbit.
8. Rockets, satellites, probes, space stations, and space shuttles.
9. The ability to cause objects to change, move, or work.
11. The substances, materials, and processes that make up a system.
12. The imaginary line around which an object spins or rotates.
15. When the moon passes into Earth's shadow.
17. A natural phenomenon that causes objects to be attracted to each other based on each objects mass and the distance between them.
18. Any product or process made by engineers.
19. The mixture of gases that surrounds a planet
21. The different shapes of the moon visible from Earth.
22. The extent of a system, separating those components and processes that are part of the system from those that are not

1. A collection of stars and their solar systems that are gravitationally bound to one and other.
3. What is the angle of Earth's tilt?
4. A star and all of the objects that orbit it.
5. new moon on oct 9and nov 6, what phase is on Oct 24?
6. how long does one cycle of the moon phases take?
10. Energy that comes from the sun.
13. A group of interacting objects or processes. Every system includes components, interactions, and boundaries.
14. When the moon passes between the Earth and the Sun such that the Moon's shadow causes some places on Earth to experience darkness during daytime.
16. A curved path that a space object takes around a star, planet, or moon.
19. astronomical unit
20. studies objects beyond Earth's atmosphere