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This is the End Image from APOD (credit and copyright Michael Wilson) Artists conception of Xenia and the Solar System…100AU from Sun. Note the 44 degree tilt of orbit. New Horizons on its out What about Uranus and Neptune – Uranus doesn’t show much detail.. – About 15 Earth masses – Methane Atmosphere – Too cold for storms etc. • • • • • • Neptune is slightly More massive Radiates its own heat Great dark spot! Radiates more heat Than its gets from sun Neptune Neptune Interior Bulls Eye! Uranian Moons…. Miranda and Ariel D = 500 Km D = 1500 Km Neptune’s System D = 500 Km D = 1500 Km Voyager flyby Neptune and Triton Neptune’s System Triton (2800 km) Voyager flyby Neptune and Triton Small Compared with Familiar Moons and Planets….. Neptune’s System Voyager flyby Neptune and Triton Meet some new family members Quoar’s Orbit What would a dwarf planet KBO look like near the sun? Image from APOD (credit and copyright Jimmy Westlake) How out does the solar system go? Moving on to other stars…. Artists conception of Xenia and the Solar System…100AU from Sun. Note the 44 degree tilt of orbit. A rare find..inner planets A rare find..inner planets The doppler method of finding planets What is density? density = mass/volume Where to look for life? A growth industry! First image of extra solar planet (5MJ) Spacecraft Missions--categories Gliese 876d Star M3 15 lyrs D= .02 AU M = 7.5 ME Gliese 876 b,c in 2:1 orbital resonance The HD 69830 system Earth like planets? Gliese 581e 3.5 ME • http://www.youtube.com/watch?v=5w7NUsBcgyw