Across
- 4. The ____ is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.
- 6. A configuration of stars as seen from Earth imagined to form a picture
- 7. The ____ Belt is a large disc of objects beyond Neptune full of mostly icy objects like Pluto and future comets!
- 10. The largest planet in our solar system, yet it also has the shortest day (Less than 10 hours!)
- 11. a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity.
- 13. Attractive force between any two objects with mass.
- 15. The ___ Cloud is a spherical shaped collections of trillions of comets and dust surrounding the sun 1-3 lightyears away. Often considered the end of our solar system.
- 16. 5th Largest planet in our solar system
- 18. the branch of science which deals with celestial objects, space, and the physical universe
- 19. The hottest planet in our solar system! Also the only planet that spins clockwise and has days that last longer than years!
- 20. The closest object in space to Earth
- 21. Small body orbiting the Sun that has lots of ice the melts when closer to the sun (this leaves a gas trail)
- 25. The _____ planets include Mercury, Venus, Earth, and Mars.
- 27. The only planet in our solar system that spins on its side! It is the coldest, but not the furthest from the sun!
Down
- 1. Once a planet but is now considered a "Dwarf Planet"
- 2. Rocky objects that orbit the Sun like a planet, but are much smaller than planets
- 3. The ____ Giants group of planets include Jupiter, Saturn, Uranus and Neptune
- 5. Any object that orbits a planet (such as a moon).
- 8. The time it takes for a planet to complete 1 rotation around its axis. 24 hours on Earth , but different on each planet
- 9. The amount of time it takes a planet to completely orbit the sun once.
- 11. The Philosophy that the Earth is the center of the universe and everything else (sun, moon, stars, etc.) revolve around it.
- 12. Earth is located in this Galaxy.
- 14. Furthest from the sun of the 8 planets in our solar system.
- 17. massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. At least 1 is found at the center of almost every solar system.
- 20. Stone or rocky object that enters Earths atmosphere
- 22. 2nd Smallest planet in our solar system. Most of it's surface is a cold reddish dessert!
- 23. The Asteroid ____ is located between Mars and Jupiter.
- 24. "The fastest planet" in our solar system
- 26. Heliocentrism is the philosophy that this object is at the center of our solar system.