Astronomy 2021A/B Lecture Notes - Lecture 8: Cryovolcano, Smog, Polar Regions Of Earth

• School: Western University
• Department: Astronomy
• Course: Astronomy 2021A/B
• Professor: Chris Racknor

Document Summary

9. 1 the moons of the outer solar system. Jupiter orbits the sun at more than 5x earth"s distance. As of early 2010, the four jovian planets were known to have at least 165 moons among them. Galileo"s most notable discovery was finding the four large moons of jupiter (in 1610: these four bodies are called the galilean moons of jupiter: Io, europa, ganymede, and callisto: galileo first sighted saturn"s rings. Christiaan huygens (1629 1695) dutch scientist who found the largest of. Giovanni domenico cassini (1625 1712) italian astronomer who discovered four more moons around saturn. The two largest jovian moons are jupiter"s moon ganymede and saturn"s moon titan; each bigger than mercury. The three other galilean moons (io, europa, and callisto) and neptune"s moon triton, are bigger than pluto. Almost all moons orbit their planets nearly in the equatorial plane of their host world, moving in the same direction as their planet"s spin.