Stars and Galaxies (MindTap Course List)
10th Edition
ISBN: 9781337399944
Author: Michael A. Seeds
Publisher: Cengage Learning
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Chapter 2, Problem 15RQ
To determine
Definition of celestial pole, and equator if Earth did not rotate.
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If you are at latitude 25 degrees north of Earth's equator, what is the angular distance (in degrees) from your zenith to the north celestial pole?
What is the shortest angular distance (in degrees) from your nadir to the north celestial pole?
Given exactly 360° in a circle and 365.24 days in a year, how many degrees per day does one's view of the night sky shift? (This assumes one looks in exactly the same direction, at the meridian - the middle of the sky defined by a line across it running due north to due south, at exactly the same time each night.)
If you go out at midnight and look at constellations along the zodiac (i.e. more or less along the ecliptic plane), and then go out at midnight six months later and do the same thing, by how many degrees will the center of your view (along the ecliptic, looking to the south) have shifted during those six months?
Chapter 2 Solutions
Stars and Galaxies (MindTap Course List)
Ch. 2 - Prob. 1RQCh. 2 - Prob. 2RQCh. 2 - Prob. 3RQCh. 2 - Prob. 4RQCh. 2 - Prob. 5RQCh. 2 - Prob. 6RQCh. 2 - Prob. 7RQCh. 2 - Prob. 8RQCh. 2 - Prob. 9RQCh. 2 - Prob. 10RQ
Ch. 2 - Prob. 11RQCh. 2 - Prob. 12RQCh. 2 - Prob. 13RQCh. 2 - Prob. 14RQCh. 2 - Prob. 15RQCh. 2 - Prob. 16RQCh. 2 - Prob. 17RQCh. 2 - Prob. 18RQCh. 2 - Prob. 19RQCh. 2 - Prob. 20RQCh. 2 - Prob. 21RQCh. 2 - Prob. 22RQCh. 2 - Prob. 23RQCh. 2 - Prob. 24RQCh. 2 - Prob. 25RQCh. 2 - Prob. 26RQCh. 2 - Prob. 27RQCh. 2 - Prob. 28RQCh. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10PCh. 2 - What is the angular distance from the north...Ch. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Arrange the following in order of increasing...Ch. 2 - Arrange the following in order of increasing...Ch. 2 - Find the Big Dipper in the star trails photograph...Ch. 2 - Look at The Sky Around You, item 1a. In the...Ch. 2 - Prob. 3LLCh. 2 - Prob. 4LL
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- Suppose Earth took exactly 300.0 days to go around the Sun, and everything else (the day, the month) was the same. What kind of calendar would we have? How would this affect the seasons?arrow_forwardWhat is the altitude of the north celestial pole in the sky from your latitude? If you do not know your latitude, look it up. If you are in the Southern Hemisphere, answer this question for the south celestial pole, since the north celestial pole is not visible from your location.arrow_forward5arrow_forward
- If you are at latitude of 40 degrees north of Earth's equator, what is the angular distance from the northern horizon up to the north celestial pole? From the southern horizon to the south celestial pole?arrow_forwardIf you are at latitude 30 degrees north of Earth’s equator, what is the angular distance from your zenith to the north celestial pole? From your nadir to the north celestial pole?arrow_forwardThis subject is astronomy-the solar system. How could you use the night sky (constellations) to find north at night? Is this "north" the same as geographic north? Why/why not?arrow_forward
- If you were to drive to some city south of your current location, how would the altitude of the celestial pole in the sky change?arrow_forwardWhere would you need to go on Earth to see the celestial equator very near your horizon?arrow_forwardLook at the center of Figure 14. Approximately what time of day is it at that location? Sunrise? Sunset? Noontime? Midnight? How do you know?arrow_forward
- Suppose you are on a strange planet and observe, at night, that the stars do not rise and set, but circle parallel to the horizon. Next, you walk in a constant direction for 8000 miles, and at your new location on the planet, you find that all stars rise straight up in the east and set straight down in the west, perpendicular to the horizon. How could you determine the circumference of the planet without any further observations? What is the circumference, in miles, of the planet?arrow_forwardHow many degrees does the Sun move per day relative to the fixed stars? How many days does it take for the Sun to return to its original location relative to the fixed stars?arrow_forwardConsider a calendar based entirely on the day and the month (the Moon’s period from full phase to full phase). How many days are there in a month? Can you figure out a scheme analogous to leap year to make this calendar work?arrow_forward
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