Across
- 3. orbits a larger body as a satelite
- 6. Flyby missins;Pioneers 10&11
- 9. comparing/contrasting world properties to understand their evolution
- 11. meteroids burning up in an atmosphere
- 13. "minor planets" rocky/metalic debris
- 15. planet’s gravity field used to speed up or change trajectory
- 17. smaller pieces of asteroids
- 18. first to flyby venus (1960's&70's)
- 19. small moon -like bodies that collided to form the inner planets
Down
- 1. "the compactness of matter"
- 2. new star (20 million years old) dusty material and newly discovered planet
- 3. orbited mercury in 2008
- 4. "super rover” landed in August, 2012
- 5. round & cleared out its orbit of debris
- 7. landed the first robot rover to analyze rock/soil on mars
- 8. has not cleared orbit of debris but is massive enough to be round
- 10. meteor that makes its way to earth
- 12. "dirty snowballs orbiting the sun"
- 14. giant cloud of gas & dust
- 16. Probes that landed on the surface of venus