AST_101_Lab_5_Exercise_Rev (1)

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Arizona State University, Tempe *

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101

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Astronomy

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Feb 20, 2024

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docx

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AST 101 Lab 5 Exercise Student Name: Question 1 (10 points): In this lab, you will use Starry Night to observe the sky from 3 locations at different longitude and latitude. These locations are defined as follows: 1. The first location must be your home location. 2. For the second location, choose one near the same latitude as your home, but far away in longitude. For example, use Tripoli, Libya if your home location is Phoenix, Arizona. 3. The third location must be in the opposite hemisphere (north or south) from your home location. For example, if your home location is Phoenix Arizona, the third location might be Adelaide, Australia. (To get the longitude and latitude values, select the city as your location in Starry Night, then read the values it lists for the city.) In the table below, list the name, longitude, and latitude for the three locations. Following the table, include a screenshot showing Starry Night set to the location in the opposite hemisphere. Location Name Longitude Latitude 1 Anthem AZ -112.11 33.85 2 Tripoli, Libya 13.11.15 32.52.31 3 Adelaide, Australia 138.35.55 34.55.43 Question 2 (5 points): On the month and day you were born (or choose another month and day at least 15 years in the past), in what constellation did the Sun appear? What is the relationship between that constellation and your zodiac sign? Please include the month and day you chose (not the year) in your answer. On my birthday, April 25th, the sun was positioned in the constellation of Taurus. In astrology, this is significant as the consolation housing the sun at your birth time determines your zodiac sign. My Zodiac sign is Taurus, reflecting the same constellation in which the sun appeared on that day. This celestial alignment creates a unique bond between you and the Constellation Taurus. Question 3 (10 points): When the Sun appears to be in Virgo, which zodiac constellation is high in the sky at midnight ? How long (weeks or months) does it take the Sun to move from Virgo to the constellation high in the sky, at midnight? Page 1 of 4

AST 101 Lab 5 Exercise When the sun is in Virgo, the constellation Pisces is high in the sky at midnight. This is because Pisces and Virgo are opposite each other on the celestial sphere. As for the Suns movement, it takes about six months for the sun to move from Virgo to Pisces. Due to the Earth's orbit around the sun, which causes the sun to appear to move through one zodiac constellation per month. Therefore, the sun's journey from Burger to Pisces spans half of the Zodiac. Question 4 (15 points): A “seasonal group” of constellations is defined as the group of constellations located near the meridian at midnight in a specific season. For example, the “Spring seasonal group” consists of constellations located near the meridian at midnight in the Spring. Answer the following 3 parts of this question: A) At your home location from Question 1, name 3 constellations in the “Spring seasonal group”. And this spring season over anthem, 3 constellations in the spring seasonal group can include Ursa Major, Leo, and Virgo. B) When the Spring seasonal group is high in the sky at midnight, where are the constellations of the “Fall seasonal group”? When the spring seasonal Group is high in the sky at midnight in anthem Arizona, the fall seasonal group is not visible. They are located on the other side of the sphere. C) In terms of the Earth’s daily rotation and orbit around the Sun, explain why the Fall seasonal group is at that location when the Spring seasonal group is high in the sky at midnight. The positioning of the spring and fall seasonal groups is a direct result of the Earth's rotation and orbit around the sun. The spring group is high in the sky at the night, it means the Earth is positioned in its orbit such that the sun is illuminating the part of the celestial sphere associated with the spring constellations. Conversely, the fall group is then on the opposite side of the celestial sphere, hidden in the daylight. As the Earth continues its orbit, it brings different constellations into view at night, leading to cyclical pattern of the seasons and the associated constellations. Question 5 (10 points): Using Starry Night, complete the following table for the current date at your home location in Question 1. Change the time to the values listed in the left column. Below the table, include a screenshot of Starry Night showing the constellation you listed as setting in the west at sunset (make sure Starry Night is set to display the names and outlines of the constellations). Page 2 of 4

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