The Cosmic Perspective (9th Edition)
9th Edition
ISBN: 9780134874364
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 1, Problem 2EAP
Define astronomical unit and light-year.
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On Earth, the parallax angle measured for the star Procyon is 0.29 arcseconds. If you were to measure Procyon's parallax angle from Venus, what would the parallax angle be? (Note: Earth's orbital radius is larger than Venus's orbital
radius.)
A. more than 0.29 arcseconds
O B. 0.29 arcseconds
O C. less than 0.29 arcseconds
D. zero arcseconds (no parallax)
On Earth, the parallax angle measured for the star Procyon is 0.29 arcseconds. If you were to measure Procyon's parallax angle from Venus, what would the parallax angle be? (Note: Earth's orbital radius is larger than Venus's orbital
radius.)
A. more than 0.29 arcseconds
B. 0.29 arcseconds
C. less than 0.29 arcseconds
D.zero arcseconds (no parallax)
Explain in detail the concept of the celestial sphere and how we use angular measurement to locate objects in the sky. Explain how these angular measurements differ from those used to locate objects on the Earth's surface.
Chapter 1 Solutions
The Cosmic Perspective (9th Edition)
Ch. 1 - Prob. 1VSCCh. 1 - Prob. 2VSCCh. 1 - Prob. 3VSCCh. 1 - Prob. 4VSCCh. 1 - Prob. 1EAPCh. 1 - Define astronomical unit and light-year.Ch. 1 - Explain the statement “The farther away we look in...Ch. 1 - Prob. 4EAPCh. 1 - Prob. 5EAPCh. 1 - What do we mean when we say that the universe is...
Ch. 1 - In what sense are we “star stuff”?Ch. 1 - Use the cosmic calendar to describe how the human...Ch. 1 - Briefly explain Earth’s daily rotation and annual...Ch. 1 - Briefly describe our solar system’s location and...Ch. 1 - Prob. 11EAPCh. 1 - Prob. 12EAPCh. 1 - Prob. 13EAPCh. 1 - Does it Make Sense? Decide whether the statement...Ch. 1 - Prob. 15EAPCh. 1 - Prob. 16EAPCh. 1 - Prob. 17EAPCh. 1 - Prob. 18EAPCh. 1 - Prob. 19EAPCh. 1 - Prob. 20EAPCh. 1 - Prob. 21EAPCh. 1 - Prob. 22EAPCh. 1 - Which of the following correctly lists our ‘cosmic...Ch. 1 - An astronomical unit is (a) any planet’s average...Ch. 1 - The star Betelgeuse is about 600 light-years away....Ch. 1 - Prob. 26EAPCh. 1 - The total number of stars in the observable...Ch. 1 - Prob. 28EAPCh. 1 - Prob. 29EAPCh. 1 - Prob. 30EAPCh. 1 - Prob. 31EAPCh. 1 - Prob. 32EAPCh. 1 - Prob. 34EAPCh. 1 - Thinking About Scale. One key to success in...Ch. 1 - Prob. 36EAPCh. 1 - A Human Adventure. Astronomical discoveries...Ch. 1 - Prob. 38EAPCh. 1 - Prob. 39EAPCh. 1 - Prob. 40EAPCh. 1 - Prob. 41EAPCh. 1 - Prob. 42EAPCh. 1 - Prob. 43EAPCh. 1 - Prob. 44EAPCh. 1 - Prob. 45EAPCh. 1 - Spacecraft Communication. We use radio waves,...Ch. 1 - Prob. 47EAPCh. 1 - Prob. 48EAPCh. 1 - Prob. 49EAPCh. 1 - Driving Trips. Imagine that you could drive your...Ch. 1 - Faster Trip. Suppose you wanted to reach Alpha...Ch. 1 - Prob. 52EAPCh. 1 - Earth Rotation Speed. Mathematical Insight 1.3...Ch. 1 - Order of Magnitude Estimate. Mathematical Insight...
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- Approximately 9000 stars are visible to the naked eye in the whole sky (imagine that you could see around the entire globe and both the northern and southern hemispheres), and there are about 41,200 square degrees on the sky. How many stars are visible per square degree? Per square arcsecond?arrow_forwardUsing stars from one or more of the “official” constellations, create an asterism that is significant to the culture of your school.arrow_forwardWhat are the three basic components of a modern astronomical instrument? Describe each in one to two sentences.arrow_forward
- Which of the following statements about stellar parallax is true? A. We observe all stars to exhibit at least a slight amount of parallax. B. Stellar parallax was first observed by ancient Greek astronomers. O C. The amount of parallax we see depends on how fast a star is moving relative to us. D. It takes at least 10 years of observation to measure a star's parallax. OE. The closer a star is to us, the more parallax it exhibits.arrow_forward1. How does Earth's revolution affect the constellations that you see at night? 2. What is the celestial sphere? 3. What is an ecliptic? why is it given that name?arrow_forward1. Where would the north celestial pole be located in the sky if you stood at the North Pole? A. 32.5 degrees above the northern horizon B. directly at your northern horizon C. 23.5 degrees above the northern horizon D. 57.5 degrees above the northern horizon E. directly over your head at your zenith 2. Where would the north celestial pole be located in the sky if you were standing in San Diego (San Diego’s latitude is 32.5 degrees above the equator? A. 32.5 degrees above the northern horizon B. directly at your northern horizon C. 57.5 degrees above the northern horizon D. directly over your head at your zenith E. 23.5 degrees above the northern horizonarrow_forward
- Star X has an apparent magnitude of 0.03 and an absolute magnitude of 0.6. If it were moved to be twice as close to Earth as it is now, which of the following would occur? A. apparent magnitude number would decrease O B. absolute magnitude number would increase C. absolute magnitude number would decrease O D. apparent magnitude number would stay the same E. apparent magnitude number would increasearrow_forward1. A distant galaxy has an apparent magnitude of 10 and is 4,000 kpc away. What is its absolute magnitude? (Round your answer to at least one decimal place.) The difference in absolute magnitude between two objects viewed from the same distance is related to their fluxes by the flux-magnitude relation. FA/FB= 2.51(MB − MA) 2. How does the absolute magnitude of this galaxy compare to the Milky Way (M = −21)?arrow_forwardParallax from Jupiter. Suppose you could observe stellar parallax from the orbit of Jupiter. How would it differ from the stellar parallax we observe from Earth? Would it be easier or more difficult to measure stellar distances? Explain.arrow_forward
- Stellar parallax is used as a tool to determine distances to stars. Describe how stellar parallax works. Also discuss the limiting factors in its use and the maximum distance that can be accurately measured using this technique. Do you believe this concept is unique to astronomy or used in other technical disciplines? Provide examples.arrow_forwardQuestion 2 Not counting the Sun, what is the brightest star in the sky as seen from Earth? Group of answer choices 1. Sirius. 2. Vega. 3. Polaris. 4. Altair.arrow_forwardHelp with 7arrow_forward
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