ASTR 101 Lecture Notes - Lecture 38: Metallic Hydrogen, Pioneer 11, Differential Rotation
26 Dec 2017
School
Department
Course
Professor
Document Summary
Cassini orbiter: saturn was silhouetted against the sun so rings could be seen. Galileo could see rings but not make out detail. V1 taken off course to form close flyby of titan. Cassini: close flyby of phoebe, titan, pan (moons). The asteroid belt failed to form into a planet due to effects of jupiter. Rings are caused by tidal forces around saturn. 8 au (8x distance from earth to the sun. ) Positive number is less bright saturn is -0. 49. Sun is -26. (cid:1013)5(cid:454) (cid:373)ass of earth. (cid:1013). 5(cid:454) earth"s. Mostly h + he, lower gravity than j. Radial distance at poles is shorter 90% of the equatorial radius. Not quite as flat as it should be if it were only h and he. Gases and fluids produce rotational flattening (solid core does not). Equinox: equatorial plane lines up with orbital plane so it points towards sun. Solstice: equatorial plane and orbital planes point perpendicular to the sun.
