a) b) c) a) b) What conditions are required for a lunar eclipse? What conditions are required for a solar eclipse? Solar and lunar eclipses come in pairs. For example, the upcoming solar eclipse on October 14, 2023 (annular from southwestern USA, partial in NYC) will be followed by a partial lunar eclipse the evening of October 28, 2023 (barely visible in the evening from NYC). Explain why solar and lunar eclipses come in pairs. You have moved to the moon and started your very own lunar colony. Being from NYC, you quickly grabbed as much prime lunar real estate as you could get your hands on. Your lunar colony now has a beautiful view of earth high above the lunar horizon due south. For this problem assume the moon's orbit around earth is circular and that the moon's axis of rotation is perpendicular to the plane of the moon's orbit. You see the earth stationary in the lunar sky. Explain why. How long does it take the sun to go from high noon to high noon as seen from the moon? In other words, how long is a "day" on the moon?

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2.
3.
4.
a)
b)
c)
a)
b)
c)
a)
What conditions are required for a lunar eclipse?
What conditions are required for a solar eclipse?
Solar and lunar eclipses come in pairs. For example, the upcoming solar eclipse on
October 14, 2023 (annular from southwestern USA, partial in NYC) will be followed
by a partial lunar eclipse the evening of October 28, 2023 (barely visible in the
evening from NYC). Explain why solar and lunar eclipses come in pairs.
Describe the phases of the earth that you see. What phase of the earth do you
see at lunar noon? What phase at lunar midnight? What phase do you see at
lunar sunrise and sunset?
Lunar Orbital Period = Sidereal Period = 27.32 days (earth days)
Lunar Rotation Period = 27.32 days = Lunar Orbital Period (captured rotation)
Lunar Synodic Period = Cycle of Lunar Phases = 29.53 days (earth days)
You have moved to the moon and started your very own lunar colony. Being from
NYC, you quickly grabbed as much prime lunar real estate as you could get your
hands on. Your lunar colony now has a beautiful view of earth high above the
lunar horizon due south.
c)
For this problem assume the moon's orbit around earth is circular and that the moon's
axis of rotation is perpendicular to the plane of the moon's orbit.
You see the earth stationary in the lunar sky. Explain why.
How long does it take the sun to go from high noon to high noon as seen from
the moon? In other words, how long is a "day" on the moon?
Your Fairy Godmother (FGM) is a straight-A Astrophysics major at Hogwarts with
a mischievous sense of humor. She just loves to apply her magical powers to her
interest in astronomy. One fine day she decided that our Old Earth's 23.5 degree
axis tilt was boring and, with one wave of her magic wand, gave New Earth an axis
tilt of 60 degrees. No environmental impact statements of any kind were filed with
anyone and the Columbia Climate School was not told about it.
Where is the Arctic Circle on New Earth? Describe the apparent motion of t sun
throughout the year for those living north of the new Arctic Circle. What do these
observers see that others do not?
b) Where is the Tropic of Cancer on New Earth? Describe the apparent motion of the
sun throughout the year for those living between the new Tropic of Cancer and the
Equator. What do these observers see that others do not?
Describe the apparent motion of the sun throughout the year as seen from New York
City (latitude 40 degrees N) on New Earth. How is it different from Old Earth?
Galileo's own drawings of the phases of the Moon. From the manuscript of The Starry Messenger.
Transcribed Image Text:2. 3. 4. a) b) c) a) b) c) a) What conditions are required for a lunar eclipse? What conditions are required for a solar eclipse? Solar and lunar eclipses come in pairs. For example, the upcoming solar eclipse on October 14, 2023 (annular from southwestern USA, partial in NYC) will be followed by a partial lunar eclipse the evening of October 28, 2023 (barely visible in the evening from NYC). Explain why solar and lunar eclipses come in pairs. Describe the phases of the earth that you see. What phase of the earth do you see at lunar noon? What phase at lunar midnight? What phase do you see at lunar sunrise and sunset? Lunar Orbital Period = Sidereal Period = 27.32 days (earth days) Lunar Rotation Period = 27.32 days = Lunar Orbital Period (captured rotation) Lunar Synodic Period = Cycle of Lunar Phases = 29.53 days (earth days) You have moved to the moon and started your very own lunar colony. Being from NYC, you quickly grabbed as much prime lunar real estate as you could get your hands on. Your lunar colony now has a beautiful view of earth high above the lunar horizon due south. c) For this problem assume the moon's orbit around earth is circular and that the moon's axis of rotation is perpendicular to the plane of the moon's orbit. You see the earth stationary in the lunar sky. Explain why. How long does it take the sun to go from high noon to high noon as seen from the moon? In other words, how long is a "day" on the moon? Your Fairy Godmother (FGM) is a straight-A Astrophysics major at Hogwarts with a mischievous sense of humor. She just loves to apply her magical powers to her interest in astronomy. One fine day she decided that our Old Earth's 23.5 degree axis tilt was boring and, with one wave of her magic wand, gave New Earth an axis tilt of 60 degrees. No environmental impact statements of any kind were filed with anyone and the Columbia Climate School was not told about it. Where is the Arctic Circle on New Earth? Describe the apparent motion of t sun throughout the year for those living north of the new Arctic Circle. What do these observers see that others do not? b) Where is the Tropic of Cancer on New Earth? Describe the apparent motion of the sun throughout the year for those living between the new Tropic of Cancer and the Equator. What do these observers see that others do not? Describe the apparent motion of the sun throughout the year as seen from New York City (latitude 40 degrees N) on New Earth. How is it different from Old Earth? Galileo's own drawings of the phases of the Moon. From the manuscript of The Starry Messenger.
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