Life in the Universe (4th Edition)
4th Edition
ISBN: 9780134089089
Author: Jeffrey O. Bennett, Seth Shostak
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 23TYU
If there is life on Enceladus, it probably gets its energy from sunlight.
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At present, NASA is planning a mission to Europa, to try and assess its habitability. An argument might also be made for Enceladus, however.
Let's imagine you had to pick one of those moons to send an uncrewed (i.e. robotic) mission to. The spacecraft will probably orbit the giant planet (Jupiter in the case of Europa, Saturn in the case of Enceladus), and make many flybys of the moon you're studying.
Which moon would you pick, and why? The goal here is to briefly discuss the pros and cons of each moon as a target for a mission. You don't even have to have a strong preference either way, just lay out a few pros and cons for each.
At present, NASA is planning a mission to Europa, to try and assess its habitability. An argument might also be made for Enceladus, however.
Let's imagine you had to pick one of those moons to send an uncrewed (i.e. robotic) mission to. The spacecraft will probably orbit the giant planet (Jupiter in the case of Europa, Saturn in the case of Enceladus), and make many flybys of the moon you're studying.
Which moon would you pick, and why? The goal here is to briefly discuss the pros and cons of each moon as a target for a mission. You don't even have to have a strong preference either way, just lay out a few pros and cons for each.
Breaking this into a few short paragraphs will probably be a good idea
There is strong evidence that Europa, a satellite of Jupiter, has a liquid ocean beneath its icy surface. Many scientists think we should land a vehicle there to search for life. Before launching it, we would want to test such a lander under the gravity conditions at the surface of Europa. One way to do this is to put the lander at the end of a rotating arm in an orbiting earth satellite.
Chapter 9 Solutions
Life in the Universe (4th Edition)
Ch. 9 - Briefly explain how the larger jovian moons tend...Ch. 9 - Briefly describe the cause of the tides on Earth,...Ch. 9 - What is synchronous rotation, and why is it so...Ch. 9 - What is tidal heating? Briefly explain how it can...Ch. 9 - Describe the evidence suggesting that Europa has a...Ch. 9 - What energy sources might be available to life on...Ch. 9 - Describe the evidence for subsurface oceans on...Ch. 9 - Why was Titan chosen for such intense study by the...Ch. 9 - Based on recent data, describe the general nature...Ch. 9 - What evidence suggests that Enceladus might be...
Ch. 9 - Could Triton be habitable? Briefly discuss the...Ch. 9 - What do we mean by chemical equilibrium and...Ch. 9 - Prob. 13RQCh. 9 - Based on our understanding of the chemistry of...Ch. 9 - Io is riddled with volcanoes because of its...Ch. 9 - Europa is likely to have fishlike organisms the...Ch. 9 - While Europa, Ganymede, and Callisto are all...Ch. 9 - The fact that our Moon keeps one side always...Ch. 9 - Titan is simply too cold to have any life.Ch. 9 - Triton might have life that uses liquid ammonia,...Ch. 9 - Io doesnt have a significant atmosphere because it...Ch. 9 - Orbital resonances like those among Io, Europa,...Ch. 9 - If there is life on Enceladus, it probably gets...Ch. 9 - If our solar system is typical, other star systems...Ch. 9 - The moons of Saturn may have large amounts of...Ch. 9 - Which statement about synchronous rotation is...Ch. 9 - Io is covered in volcanoes while Europa is covered...Ch. 9 - Which of the following is not an indication of...Ch. 9 - Photosynthesis is an unlikely source of energy for...Ch. 9 - Its assumed that, even if Europa has life, the...Ch. 9 - The chances for life on Titans surface are...Ch. 9 - Where might we find liquid water on Titan? (a) in...Ch. 9 - Why were scientists so surprised to find active...Ch. 9 - Chemical disequilibrium is likely to be present in...Ch. 9 - Cost-Effective Exploration. Given its budget, NASA...Ch. 9 - Lessons for Life. Considering everything weve...Ch. 9 - Exploring Europa I. Although Europa is a promising...Ch. 9 - Exploring Europa II. One suggestion for...Ch. 9 - Europan Fish. On Earth, fish breathe oxygen that...Ch. 9 - Life on Titan. Several possibilities have been...Ch. 9 - Migrating Life. As we discussed in Chapter 6,...Ch. 9 - Orbital Resonances I. Using the data in Appendix...Ch. 9 - Orbital Resonances II. Using the data in Appendix...Ch. 9 - Tidal Force on the Moon. In Cosmic Calculations...Ch. 9 - Tidal Force on Io. Using the procedure from Cosmic...Ch. 9 - Tidal Force on Europa and Ganymede. Using the...Ch. 9 - Limited Thinking. Throughout this book, we have...Ch. 9 - Europa Orbiter. Find out the current status of...
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- Given that no sunlight can penetrate Europa’s ice shell, what would be the type of energy that could make some form of europan life possible?arrow_forwardWhat are the three requirements that scientists believe an environment needs to supply life with in order to be considered habitable?arrow_forwardIn early 2006, images from flybys of Enceladus showed something amazing, which explained the surprising findings from 2005. What was it?arrow_forward
- If there was a planet orbiting a first generation star, which planet in our solar system would it resemble most? Would it be likely for such a planet to have life?arrow_forwardWhat evidence shows that Venus has been resurfaced within the past half-billion years?arrow_forwardHow can a planet’s atmosphere affect the width of the habitable zone in its planetary system?arrow_forward
- What is the evidence for a liquid water ocean on Europa, and why is this interesting to scientists searching for extraterrestrial life?arrow_forwardDue to the fact that planets emit more infrared radiation than any other type of light, astronomers have the best chance of directly imaging an exoplanet in the infrared part of the spectrum. select one of the following: A) true B) falsearrow_forwardDescribe the Doppler Method of searching for exoplanets.arrow_forward
- How probable is it that other solar systems will have habitable planets, given what you know about the solar nebula theory? Take a look at NASA's Kepler mission and write a half-page summary of it.arrow_forwardHow can a planets atmosphere affect the width of the habitable zone in its planetary system?arrow_forwardConsidering what you learned from the solar nebula theory, how likely do you think it is to find habitable planets in other solar systems? Visit NASA’s Kepler mission to learn more about this search, and write a ½ page summary on the mission.arrow_forward
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