ASTR 1101-001 Spring 2008
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Transcript of ASTR 1101-001 Spring 2008
![Page 1: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/1.jpg)
ASTR 1101-001Spring 2008
Joel E. Tohline, Alumni Professor
247 Nicholson Hall
[Slides from Lecture30]
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Chapter 11: Terrestrial Planets
• Mercury– Heavily cratered (like the Earth’s moon)– Some evidence of lava flows and shrinkage of
the planet’s crust– Generally considered a “dead” planet
• Venus
• Mars
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Chapter 11: Terrestrial Planets
• Mercury– Heavily cratered (like the Earth’s moon)– Some evidence of lava flows and shrinkage of
the planet’s crust– Generally considered a “dead” planet
• Venus
• Mars
![Page 6: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/6.jpg)
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Chapter 11: Terrestrial Planets
• Mercury– Heavily cratered (like the Earth’s moon)– Some evidence of lava flows and shrinkage of
the planet’s crust– Generally considered a “dead” planet
• Venus
• Mars
![Page 10: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/10.jpg)
![Page 11: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/11.jpg)
Chapter 11: Terrestrial Planets
• Mercury– Heavily cratered (like the Earth’s moon)– Some evidence of lava flows and shrinkage of
the planet’s crust– Generally considered a “dead” planet
• Venus
• Mars
![Page 12: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/12.jpg)
Chapter 11: Terrestrial Planets
• Venus– Rotating very slowly…and backwards!– Atmosphere: Dense, hot, and corrosive!– Properties of atmosphere due to runaway
“greenhouse” effect
• Venus
• Mars
![Page 13: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/13.jpg)
Venus:
Image of the surface of Venus obtained by radar imaging.
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Venus: topographic map
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Chapter 11: Terrestrial Planets
• Venus– Rotating very slowly…and backwards!– Atmosphere: Dense, hot, and corrosive!– Properties of atmosphere due to runaway
“greenhouse” effect
• Venus
• Mars
![Page 16: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/16.jpg)
Chapter 11: Terrestrial Planets
• Venus– Rotating very slowly…and backwards!– Atmosphere: Dense, hot, and corrosive!– Properties of atmosphere due to runaway
“greenhouse” effect
• Venus
• Mars
![Page 17: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/17.jpg)
Atmospheres of Earth & Venus
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Venus:
Ultraviolet image of Venus highlighting theCloud layer structure.
![Page 19: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/19.jpg)
Chapter 11: Terrestrial Planets
• Venus– Rotating very slowly…and backwards!– Atmosphere: Dense, hot, and corrosive!– Properties of atmosphere due to runaway
“greenhouse” effect
• Venus
• Mars
![Page 20: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/20.jpg)
Chapter 11: Terrestrial Planets
• Mars– Surface imaged by spacecraft extremely well– Surface explored by spacecraft that have
successfully soft-landed on surface• Viking Lander (VL1 & VL2)• Mars Pathfinder (MP)• Exploration Rovers (Opportunity & Spirit)
– Evidence for (subsurface) water
![Page 21: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/21.jpg)
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Chapter 11: Terrestrial Planets
• Mars– Surface imaged by spacecraft extremely well– Surface explored by spacecraft that have
successfully soft-landed on surface• Viking Lander (VL1 & VL2)• Mars Pathfinder (MP)• Exploration Rovers (Opportunity & Spirit)
– Evidence for (subsurface) water
![Page 24: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/24.jpg)
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Chapter 11: Terrestrial Planets
• Mars– Surface imaged by spacecraft extremely well– Surface explored by spacecraft that have
successfully soft-landed on surface• Viking Lander (VL1 & VL2)• Mars Pathfinder (MP)• Exploration Rovers (Opportunity & Spirit)
– Evidence for (subsurface) water
![Page 28: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/28.jpg)
Chapter 11: Terrestrial Planets
• Mars– Surface imaged by spacecraft extremely well– Surface explored by spacecraft that have
successfully soft-landed on surface• Viking Lander (VL1 & VL2)• Mars Pathfinder (MP)• Exploration Rovers (Opportunity & Spirit)
– Evidence for (subsurface) water
![Page 29: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/29.jpg)
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Chapter 11: Terrestrial Planets
• Mars– Surface imaged by spacecraft extremely well– Surface explored by spacecraft that have
successfully soft-landed on surface• Viking Lander (VL1 & VL2)• Mars Pathfinder (MP)• Exploration Rovers (Opportunity & Spirit)
– Evidence for (subsurface) water
![Page 33: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/33.jpg)
![Page 34: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/34.jpg)
Chapter 11: Terrestrial Planets
• Mars– Surface imaged by spacecraft extremely well– Surface explored by spacecraft that have
successfully soft-landed on surface• Viking Lander (VL1 & VL2)• Mars Pathfinder (MP)• Exploration Rovers (Opportunity & Spirit)
– Evidence for (subsurface) water
![Page 36: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/36.jpg)
Rover ‘Opportunity’: Landing Site
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Rover ‘Opportunity’: Four+ years of travel
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Rover ‘Opportunity’: Four+ years of travel
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Rover ‘Opportunity’: View from edge of Victoria Crater
![Page 40: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/40.jpg)
Chapter 11: Terrestrial Planets
• Mars– Surface imaged by spacecraft extremely well– Surface explored by spacecraft that have
successfully soft-landed on surface• Viking Lander (VL1 & VL2)• Mars Pathfinder (MP)• Exploration Rovers (Opportunity & Spirit)
– Evidence for (subsurface) water
![Page 41: ASTR 1101-001 Spring 2008](https://reader038.fdocuments.us/reader038/viewer/2022110102/5681332b550346895d9a215e/html5/thumbnails/41.jpg)
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