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Class Notes for Astronomy at University of Victoria

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ASTR 101 Lecture Notes - Lecture 42: Exoplanet, Headon
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Lecture 42 - Exoplanets Artist renditions of the exoplanets. Direction of rotation defined by the supernova. Conservation of angular momentum. Material accreted into planets therefore they are well spaced. All diffe...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture Notes - Lecture 43: Giant Planet, Circumstellar Habitable Zone
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Lecture 43 Exolife Amount of light blocked is directly related to size of the planet. As planet moves in front of star, you can see slight change in the spectrum of the star. Subtract from original and you get a measu...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture 44: ASTR 101 - Lect 44
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Lecture 44 The Drake Equation Have observed amino acids in nebula, on other planets, etc. Incredibly common in the universe. Fundamental for life. Spark - lightening. Seen on Jupiter, Saturn, Venus. Lightening can pro...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture Notes - Lecture 41: Roche Limit, Kuiper Belt, Axial Tilt
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Lecture 41 - Neptune Neptunes rotation: 30 axial tilt (like Mars, Saturn, Earth). Rotation speed of core is faster than rotation speed of atm (opposite all other planets). Average rotation: 17.3h (Doppler), Magnetospher...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture Notes - Lecture 38: Metallic Hydrogen, Pioneer 11, Differential Rotation
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Lecture 38 - Saturn Cassini orbiter: Saturn was silhouetted against the Sun so rings could be seen. Recognized by ancient Greeks as a planet. Galileo could see rings but not make out detail. Pioneer 11 and voyager 1 + 2...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture Notes - Lecture 39: Hershel Greene, Tidal Locking, Orbital Period
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Lecture 39 Physical features of Saturn Magnetosphere: 1/20 of Jupiter due to small metallic H (not enough gravity). Magnetic axis lines up with rotation axis. This supports the dynamo theory. North and South poles are ...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture Notes - Lecture 40: Axial Tilt, Orbital Period
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Lecture 40 - Uranus Similar size. Uranus is light blue, Neptune is blue with zones/belts. Flybys: Voyager 2. V1 deflected at Saturn. Uranus not discovered until long after the telescope was invented. Herschel (1781): ...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture Notes - Lecture 36: Great Red Spot, Centripetal Force, Earth Mass
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Lecture 36 Physical characteristics of Jupiter Equatorial radius much larger than polar radius. Rotational flattening: centripetal force of equator causes bulging. If entire planet were gaseous, it would be flatter (d...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture Notes - Lecture 37: Coronal Mass Ejection, Moons Of Jupiter, Photosynthesis
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Lecture 37 Formation of Jupiter Less influenced by coronal mass ejections and solar flares but these would not impact Jupiter much anyway (since it is so large). High radiation, missions very dangerous. Total 69 moo...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture Notes - Lecture 35: Galilean Moons, Terrestrial Planet, Chaos Theory
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Lecture 35 Jupiter Best known by banded features and big red spot - led to chaos theory. Juno yet to arrive. Launched months apart but arrived at very different times. Big red spot: stationary storm. Crashed into J...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture Notes - Lecture 34: Hydrazine
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Lecture 34 Atm of Mars Very thin atm - even if it were N and O, no human could breathe in thin atm. Forms ice crystals, CO2 ice clouds. Temperature drops off quickly as you move away from surface in the sunlight. Dus...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture Notes - Lecture 31: Dry Ice
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Lecture 31 Physical properties of Mars Don't have enough gravity on their own to make them spherical. Taken from the asteroid belt - instead of crashing, entered into Mars' orbit. Evidence of capture objects. Mass of...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture 29: ASTR 101 - Lect 29
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Lecture 29 - Venus Venus: Earth's sister planet. Similar properties (size) and very dissimilar. NASA's plan for an off-world colony: a floating city above Venus - this is a real headline. Venera series: Produced the ...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture Notes - Lecture 30: Axial Tilt
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Lecture 30 - Mars Mars has mostly solid water (the planet is very cold). There used to be flowing liquid water on the surface. Earth and Mars' eccentricity line up (or are very close). "canali" translated to "canals" ...

Astronomy
ASTR 101
Travis Martin
ASTR 101 Lecture Notes - Lecture 33: Lunar Prospector, Water Cycle, Regolith
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Lecture 33 Systems on Mars This is the river system we see on Earth from mountains down to plains. Conflict between weather water was short-lived on planet or around for a long time (not if it was present). This was ...

Astronomy
ASTR 101
Travis Martin

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