Astronomy Today (9th Edition)
9th Edition
ISBN: 9780134450278
Author: Eric Chaisson, Steve McMillan
Publisher: PEARSON
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Chapter 1, Problem 13D
To determine
To explain: The parallax with an everyday example.
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Chapter 1 Solutions
Astronomy Today (9th Edition)
Ch. 1 - Prob. 1DCh. 1 - Prob. 2DCh. 1 - Prob. 3DCh. 1 - Prob. 4DCh. 1 - Prob. 5DCh. 1 - Prob. 6DCh. 1 - Prob. 7DCh. 1 - Prob. 8DCh. 1 - Prob. 9DCh. 1 - Prob. 10D
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- Is the ecliptic the same thing as the celestial equator? Explain.arrow_forwardOn the day of the vernal equinox, the day length for all places on Earth is actually slightly longer than 12 hours. Explain why.arrow_forwardThe apparent change of the position of a star due to the Earths orbiting the Sun is called ___. (18.1)arrow_forward
- Ursa Minor contains the pole star, Polaris, and the asterism known as the Little Dipper. From most locations in the Northern Hemisphere, all of the stars in Ursa Minor are circumpolar. Does that mean these stars are also above the horizon during the day? Explain.arrow_forwardExplain why more stars are circumpolar for observers at higher latitudes.arrow_forwardWhat is the difference between asterism d a constellation? Give some examples.arrow_forward
- What is an asterism? Can you name an example?arrow_forwardWhat is the point on the celestial sphere representing the extension of the axis of Earths North Pole? (18.1) (a) North celestial pole (b) core (c) vernal equinox (d) celestial equatorarrow_forwardWhen using the parallax method, if an object appears to shift more, that means its distance is __________.arrow_forward
- When using the parallax method, if an object appears to shift less, that means its distance is __________.arrow_forwardIf we view a star now, and then view it again 6 months later, our position will have changed by the diameter of the Earth's orbit around the sun. For nearby stars (within 100 light-years or so), the change in viewing location is sufficient to make the star appear to be in a slightly different location in the sky. Half of the angle from one location to the next is known as the parallax angle (see figure). Parallax can be used to measure the distance to the star. An approximate relationship is given by d = 3.26 p , where d is the distance in light-years, and p is the parallax measured in seconds of arc. Vega is a star that has a parallax angle of 0.13 second. How far is Vega from the sun? Note: Parallax is used not only to measure stellar distances. Our binocular vision actually provides the brain with a parallax angle that it uses to estimate distances to objects we see. (Round your answer to two decimal places.) light-yearsarrow_forwardIs wanting one answer which is to calculate the magnitude A-2Barrow_forward
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