Across
- 4. - to shine light on an object and make it visible
- 7. Pull - the force that pulls two objects together due to their mass
- 8. System - the sun, the planets that orbit the sun, and other objects that orbit the sun
- 10. (Cosmos) - all of space and its contents
- 11. - the four parts of the year where weather, ecology, and number of daylight hours change as a result of Earth’s orbit around the sun
- 14. Phase - the shape of the illuminated part of the Moon as it appears from Earth
- 16. - the border between light and dark on the Moon
- 19. - a moon outside our solar system
- 20. Eclipse - when the moon is completely dark
- 22. Moon - a moon phase where the Moon is not visible from the Earth
- 23. - the force by which all things with mass or energy (including planets, stars, galaxies, and light) are brought towards one another
- 25. Eclipse - The moment that the moon orbits directly between the sun and the Earth
Down
- 1. - the tendency of an object to remain at rest or unchanged
- 2. Moon - a moon phase that looks like a full circle from Earth
- 3. Moon - a moon phase that looks like more than a half circle from Earth
- 5. - the relative size of things
- 6. Moon - a moon phase that looks like less than half a circle from Earth
- 9. Moon - a moon phase that looks like half a circle from Earth
- 12. - the star that is the main source of light at the center of our solar system
- 13. - something we observe to be similar over and over again
- 15. - the nearly circular path a smaller object (like the Moon) travels around a larger object like Earth)
- 17. - a rocky sphere that travels around a planet
- 18. - a planet outside our solar system
- 21. - the circular movement of an object around its center (like a top spinning)
- 24. - a collection of gas, dust, stars, and solar systems that are held together by gravity