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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
• Neptune is slightly
• More massive
• Radiates its own heat
• Great dark spot!
• Radiates more heat
• Than its gets from sun
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
Voyager flyby Neptune and Triton
Triton (2800 km)
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?
Artists conception of Xenia and the Solar System…100AU from Sun. Note the 44
degree tilt of orbit.
Moving on to other stars….
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?
• http://www.youtube.com/watch?v=5w7NUsBcgyw
Gliese 581e 3.5 ME
