Across
- 2. velocity the speed where an object has traveled to completely overcome a planet/moon's gravity and make it into space away from that planet or moon
- 8. three laws devised by Johannes Kepler to define the mechanics of planetary motion
- 10. a law which states that the momentum of a system is constant if there are no external forces acting on the system
- 11. an Italian astronomer and mathematician who was the first to use a telescope to study the stars
- 12. a darkening of the moon caused by its entering the shadow of the earth
- 14. quantity of rotation of a body
- 15. a Renaissance mathematician and astronomer who formulated a model of the universe that placed the Sun rather than the Earth at the center of the universe
- 16. the point in the orbit of a planet that is furthest from the sun
- 17. the center of rotation
Down
- 1. the center of mass of two or more bodies that are orbiting each other
- 3. deviation of a curve or orbit from circularity
- 4. a regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points
- 5. this person best known for his discovery that the orbits in which the Earth and the other planets of the solar system travel around the Sun are elliptical, or oval, in shape
- 6. three laws of mechanics describing the motion of a body made by Issac Newton
- 7. a wave that travels at the speed of light and consists of a combined electric and magnetic effect
- 9. field a region around a magnetic material or a moving electric charge within which the force of magnetism acts
- 13. gravitationally curved path of an object about a point in space