Lecture 7 - The Solar System

Nature of the universe astronomy the solar system

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Unformatted text preview: have the same height above the horizon at ... 8:30 pm. The sidereal day is 4 minutes shorter than the solar day. Each day, stars rise 4 minutes earlier than on the previous day. After 15 days this corresponds to 15 * 4 min = 60 min = 1 hr 7. The shortest possible time span between the occurrence of a lunar and a solar eclipse is ... two weeks. For a lunar eclipse to happen, the Earth has to be located between the Sun and the Moon. The Moon's phase immediately before and after the lunar eclipse is Full. For a solar eclipse to happen, the Moon has to be located between the Earth and the Sun. In this position, the Moon's phase is New. The Moon needs 29.5 days to go once through its phases, hence 2 weeks pass between Full and New Moon. 33 NATURE of the Universe Astronomy - The Solar System Homework Review Review of Homework 1 8. Lunar phases are caused by ... The Moon's day- and nighttime cycle, as seen from Earth. Half of the Moon is always illuminated by Sunlight. While the Moon is orbiting Earth in 29.5 days, we see changing fractions of the Moon's day- and nighttime sides. Between New and Full Moon, we see more and more of the Moon's daytime side. Between Full and New Moon, we see less and less of the Moon's daytime side. 10. The largest northern declination the Moon can reach is ... +28.7 degrees. Earth's equator is inclined by 23.5 degree with respect to the ecliptic. Because of this, the northernmost declination the Sun can reach is +23.5 degree. The Moon's orbit is inclined by 5.2 degree with respect to the ecliptic. In the course of its orbit, the Moon can be both above or below the ecliptic. The largest northern declination the Moon can reach is +23.5 + 5.2 degree = +28.7 degree. 34...
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