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Pale Blue DotCarl Sagan
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Taken by Voyager 1 After Completion of Primary Mission ' ... 55 Greetings. 90 Minutes of Music. Uranium-238. Binary Code. Works Cited. Sagan, Carl. Pale Blue Dot. ... – PowerPoint PPT presentation
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Title: Pale Blue DotCarl Sagan
1
Pale Blue DotCarl Sagan
By Michael Dion
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The Author Carl Sagan
- Cosmos
- Golden Record
- Europas Ocean
- The Drake Equation
3
The Photograph
- Earth From 4 Billion Miles
- Less Than 1 Pixel
- Taken by Voyager 1 After Completion of Primary
Mission - There is perhaps no better demonstration of the
folly of human conceits than this distant image
of our tiny world. To me, it underscores our
responsibility to deal more kindly with one
another, and to preserve and cherish the pale
blue dot, the only home we've ever known. (Carl
Sagan)
(NASA, JPL)
4
Voyager Program
- Voyager 1 and 2
- Voyager 2 Launched Before Voyager 1
- Voyager 1 Sent on Shorter, Faster Trajectory
towards Jupiter - Mission was to complete Grand Tour of the 4 Gas
Giant Planets
5
Instrumentation
- Plasma Science Experiment Measure Properties of
Jupiters Magnetosphere. - Magnetometer Magnetic Field Intensity, 8-200,000
nT. - Low-Energy Charged Particles Experiment
Established the morphology of the magnetospheres
of Saturn and Uranus, including bow shock,
magnetosheath, and magnetotail interactions.
(Applied Physics Laboratory, Johns Hopkins
University) - Cosmic Ray Sub-System Nuclei of Cosmic Rays and
High/Low Energy Electrons. - Plasma Wave Subsystem Properties of Plasma
Waves. - Other Instruments include PRA and UVS
6
Voyager 1
- Launch Sept. 5, 1977
- Farthest Man-Made Object From Earth (9.6 Billion
Miles) - Gravity Assist
- Volcanic Activity on Io
- Titan
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The Tour of Voyager 1
- Jupiter
- Closest Approach March 5, 1979
- Discovered Volcanic Activity on Io
- Photographed for 4 Months
Valhalla Crater on Callisto (NASA,1979)
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The Tour of Voyager 1 (Cont.)
- Saturn
- Closest Approach
- November 12, 1980
- Close Approach of Titan
- Gravity Assist From Flyby
- of Titan Took Voyager 1
- Out of Ecliptic Plane
(NASA, JPL)
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Voyager 1s Travels
- Currently In Heliosheath
- 13.8 Light Hours from Earth
- In 40,000 years, will be 1.7 Light Years from
AC793888 - Traveling at 17.4 km/s.
NASA,JPL
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Voyager 2
- Launched August 20, 1977
- Slow, Longer Trajectory
- Kept in Ecliptic
- Discovered Rings
- of Jupiter
- Distance Twice
- That of Pluto
- Cost-Benefit
NASA
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The Tour of Voyager 2
- Uranus
- Flyby of Uranus
- Closest Approach
- January 24, 1986
- Discovered 10 Moons
- Measured Temperature
- of 60 K
- Observation of Magnetotail
NASA, JPL
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The Tour of Voyager 2 (Cont.)
- Neptune
- Flyby of Neptune
- Closest Approach
- August 25, 1989
- 3000 Miles!
- Great Dark Spot
- Triton
NASA, JPL
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Voyager 2s Travels
- Heliosphere
- 3.3 AU/Year
- 83 AU
- 40,000
- Years
NASA, JPL
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Future of Voyager
- 3 Plutonium-238 Reactors
- Termination of Scan Platform and UV operations
- Terminate of Gyroscope
- Functions
- Terminate of DTR Functions
- Power Sharing
- Cant Power a Single
- Instrument
NASA, JPL
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Golden Record
- Carl Sagan
- Instructions
- 55 Greetings
- 90 Minutes of Music
- Uranium-238
- Binary Code
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Works Cited
- Sagan, Carl. Pale Blue Dot. New York Random
House Inc, 1994. - Sagan, Carl. Cosmos. New York Random House Inc,
1980. - Voyager. 1.14.2003. Jet Propulsion Laboratory,
NASA. 11.20.2007 http//voyager.jpl.nasa.gov/ - Ness, Norman F. Magnetic Fields at Uranus.
Science. July 1986. 11.20.2007 http//www.sciencem
ag.org/cgi/content/abstract/233/4759/85 - Voyager. Wikipedia The Free Encyclopedia.
11.21.2007. 11.21.2007 http//en.wikipedia.org/wik
i/Voyager_program
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