lecture14 - Astronomy Picture of the Day The Carina Nebula...

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Astronomy Picture of the Day The Carina Nebula
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Announcements Midterm exam on friday Exam covers all material through Wednesday’s lecture, textbook chapters 1-6 Bring a scantron form #288 and a pencil Leave all backpacks, bags, etc., at the front of the room Seating chart will be posted on the class web site: you must look at this in advance so you’ll know where to sit!
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The Terrestrial Planets
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Mercury and Venus in the sky Mercury and Venus are always close to the Sun on the sky horizon
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Mercury Since it’s so close to the Sun in the sky, it’s hard to observe Mercury from Earth The best images of Mercury are from the Mariner 10 spacecraft (1974)
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Mercury’s orbit and rotation Rotation period: 59 days Revolution (orbital) period: 88 days A F E D C B G An observer in a fixed location on Mercury would only see a sunrise every 176 days!
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Because of the very long day and night, Mercury’s surface goes through extremes of temperature: Day:
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This note was uploaded on 04/20/2008 for the course PHYS 20A taught by Professor Staff during the Fall '02 term at UC Irvine.

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lecture14 - Astronomy Picture of the Day The Carina Nebula...

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