Horizons: Exploring the Universe (MindTap Course List)
14th Edition
ISBN: 9781305960961
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 5, Problem 8RQ
To determine
The advantages to building an observatory on the lunar surface in the absence of the atmosphere.
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Item 12
Part A
What is the ratio of the sunlight intensity reaching Pluto compared with the sunlight intensity reaching Earth? (On average, Pluto is 39 times as far from the Sun as is Earth.)
Express your answer using two significant figures.
V—| ΑΣΦ
IPluto
TEarth
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?
The Mars Reconnaissance Orbiter
(MRO) flies at an average altitude of 280km above the Martian Surface.
If its cameras have an angular resolution of 0.2 arc seconds, what is the
size of the smallest objects that the
MRO
can detect on the Martian surface?
Use the
equation:
S =x × d / 206265 arcseconds / radian
, where S is the true size of the object, d is the distance from the detector to the object, and x is the angular size of the object. Your answer will be in km (you can
ignore the radians unit (it should appear, but the equation made a simplifying assumption that dropped it out.
What will be the minimum size of a Martian surface feature resolvable during the 2003 opposition by an Earth-based telescope with an angular resolution of 0.05"?
Chapter 5 Solutions
Horizons: Exploring the Universe (MindTap Course List)
Ch. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - Prob. 3RQCh. 5 - Prob. 4RQCh. 5 - Prob. 5RQCh. 5 - Prob. 6RQCh. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 9RQCh. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - Prob. 14RQCh. 5 - Prob. 1DQCh. 5 - Consider the “atmospheric windows” of Earth’s...Ch. 5 - The thickness of the plastic in plastic bags is...Ch. 5 - What is the wavelength of radio waves transmitted...Ch. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - H does the resolving power of the 5-rn telescope...Ch. 5 - If you build a telescope with a focal length of...Ch. 5 - Prob. 9PCh. 5 - Prob. 10PCh. 5 - Prob. 1LTLCh. 5 - The star images in the photo in Figure UN 5-4 are...Ch. 5 - The X-ray image in Figure UN 5-5 shows the remains...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A surprisingly large number of people in the world don’t believe that astronauts havewalked on the Moon. They believe the Moon landing to have been a hoax. One argumentthey use is that if there are astronaut footprints on the Moon, we should be able to seethem using a powerful telescope. The fact that we do not, they say, is evidence that theywere never there.The Lunar Reconnaissance Orbiter (LRO) is a NASA robotic spacecraft currently orbitingthe Moon. The LRO gets as close as 35 km to the Moon’s surface. The diameter ofthe camera’s primary mirror is 195 mm. If the camera is sensitive to optical light at awavelength of 600 nm, show that it would not be able to spatially resolve a foot print ofphysical length 30 cm when it is 35 km above the Moon’s surface.Tip: You’ll need to calculate the angular size of the footprint, as seen from a height of35 km. θ = S/D, where S is the physical size of the footprint and D = 35 km, is theangular size of the footprint in radians.arrow_forward2arrow_forwardWhy does the Moon not have an atmosphere?arrow_forward
- Give several reasons Mercury would be a particularly unpleasant place to build an astronomical observatory.arrow_forwardChoose the BEST answer to the following: When the shadow of the Moon falls on Earth, we have a (a) lunar eclipse. (b) solar eclipse (c) solar eclipse if it’s daytime and lunar eclipse if it’s nighttime. (d) very dangerous event.arrow_forwardPure, solid water ice has an albedo A≈0.35. What is the minimum distance from the Sun at which a rapidly rotating ice cube would remain frozen? Between which two planets does this distance lie?arrow_forward
- The unaided human eye has a resolution of about 100 arc seconds in bright lighting conditions. Could someone looking out the command module window have seen the astronauts on the Moon yes or no?arrow_forwardWhat mechanism transfers heat away from the surface of the Moon? If the Moon is losing energy in this way, why does it not simply become colder and colder?arrow_forwardLarge telescopes often have small fields of view, i.e. it can only see a very small corner of the sky. For example, the Hubble Space Telescope (HST) Advanced Camera has a field of view that is roughly square and about 0.055 degree on a side. How do I Calculate the angular area of the HST's field of view in square degrees?arrow_forward
- Learn about a mission that is either underway or is planned to research the atmosphere of one of the terrestrial planets (including Earth). Create a one-page essay outlining the objective and the lessons we expect to gain.arrow_forwardIn The Old Man and the Sea, Hemingway described the old man lying in his boat, looking up at the sky just after sunset: “It was dark now as it becomes dark quickly after the Sun sets in September. He lay against the worn wood of the bow and rested all that he could. The first stars were out. He did not know the name of Rigel but he saw it and knew soon they would all be out and he would have all his distant friends.” Explain what is astronomically incorrect about this passage. Notes: Rigel is a star close to the star Betelgeuse [see LT p 9], and note the date the Sun is “in” Scorpius [see LT p 13].arrow_forwardIn contrast to Earth, the Moon undergoes extremes in tempera- ture. Why?arrow_forward
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