Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 10, Problem 16Q
To determine
The advantages and disadvantages of astronauts exploring the Moon as opposed to using mobile, robotic instrument packages.
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Prompt: You are on the Sensor and Data Acquisition engineering team for the new NASA space rover program: the Unmanned Mobile Assessment Drone for Basic Reconnaissance and Observation. Your team is working with a very low budget, and have been given a hand-me-down drone which was repurposed from an old Mars mission.
The drone has already landed successfully on Saturn. It’s first task was to travel 4.6 m to a rock and then use it’s built in drill to take a sample. Unfortunately, it appears that the drone stopped very short, only traveling 1.32 m instead of the 4.6 m. Everything about the ultrasonic distance sensor that the drone uses to move with seems to be operating correctly. When you requested details from the drone, it said that the time it took for the 40 kHz ultrasonic sound wave to travel to the rock and back was 0.0108 seconds.
Why did the drone only travel 1.32 m, given the 0.0108s echo time?
Part of the "Mars Direct" mission plan involves rotating the spacecraft on its way to Mars to provide the astronauts with a simulation of Martian gravity.
True
False
Due to the need to catch the correct launch window for the trip home, the total duration for a round trip to Mars will have to be
at most 18 months
at least 18 months
at least 30 months
at most 12 months
at least 24 months
What is one of the Mars missions that is currently operating and write about the mission’s history, goals, and accomplishments to date.
Chapter 10 Solutions
Universe
Ch. 10 - Prob. 1CCCh. 10 - Prob. 2CCCh. 10 - Prob. 3CCCh. 10 - Prob. 4CCCh. 10 - Prob. 5CCCh. 10 - Prob. 1CLCCh. 10 - Prob. 1QCh. 10 - Prob. 2QCh. 10 - Prob. 3QCh. 10 - Prob. 4Q
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- Explain the differences between the Grand Canyon on Earth and Valles Marineris on Mars.arrow_forwardExplain the runaway refrigerator effect and the role it may have played in the evolution of Mars.arrow_forwardThe average distance from Earth to Mars is 1.5 AU. If you send a command using radio waves (a form of light!) to a rover on the Mars surface, how long will you have to wait before you receive the response? Assume the rover responds immediately after it receives the commandarrow_forward
- The average distance to Mars is 1.5 AU. If you send a command using radio waves (a form of light!) to a rover on the Mars surface, how long will you have to wait before you receive the response? Assume the probe responds immediately after it receives the command.arrow_forwardThe European Space Agency launched a probe called Rosetta in March 2004. In August 2014, Rosetta reached its destination: a comet called 67P/Churyumov-Gerasimenko. Rosetta is the first spacecraft to rendezvous with a comet, and plans to orbit the comet. It contained a lander craft, called Philae. The Philae lander has several scientific instruments onboard, used to study the comet. ALICE is an ultraviolet imaging spectrograph, used to search for noble gases in the comet core. The ALICE instrument uses potassium bromide as one of the compounds in the analysis of noble gases. Potassium bromide has a specific gravity of 2.74. Assume the lander has a liquid sample of potassium bromide onboard that fills a 1.49-gallon [gal] container. What is the mass of the potassium bromide sample in the container, in units of kilograms [kg]?arrow_forwardWhich of these things did the Voyager spacecraft discover about Enceladus in the early 1980s, indicating that it is somewhat unusual among planetary bodies in our solar system? Check the TWO items that apply. a It has a thick atmosphere, made mostly of nitrogen. b It has the darkest, least reflective surface of all the known planetary bodies. c It is the brightest (i.e. most reflective) object in the solar system. d The entire surface is more heavily-cratered than any other body in our solar system. e Its surface is very smooth in some places.arrow_forward
- The Curiosity Rover has recently landed on Mars and likes to send Twitter updates on its progress. If a tweet is posted 13 minutes after it was sent, how far is Curiosity from Earth? (Assume there is no network lag.)arrow_forwardWhich of these surface features, discovered by the first spacecraft mission (Mariner 4) to Mars, was NOT expected to be seen on Mars? Answers: A. craters B. giant volcanoes C. expansive canyons D. canals E. running waterarrow_forwardMission to Titan: Titan is the largest of Saturn’s moons and the only moon in the Solar System that possesses a dense atmosphere and large liquid bodies (seas or lakes) at its surface. For these and other reasons, many exobiologists think that Titan is the most likely place in the Solar System beside Earth where life might exist. NASA is considering sending a 600 kg space probe into orbit around Titan in order to map its surface. This would be followed a few years later by a 320 kg robotic lander that would land on the surface of Titan in order to look for life. a) What would be the space probe’s velocity and orbital period if the probe were to orbit at an altitude of 70 km above the surface of Titan? b) What force would the lander’s thrusters need to produce in order to allow the lander to hover just above the surface of Titan.arrow_forward
- What is the composition of the polar caps on Mars?arrow_forwardSuppose that, decades from now, NASA is considering sending astronauts to Mars and Venus. In each case, describe what kind of protective gear they would have to carry, and what their chances for survival would be if their spacesuits ruptured.arrow_forwardLearn 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_forward
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