Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 27, Problem 12Q
To determine
The way how large asteroid impact that could lead to the spread of life to planets and moons in the solar system.
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why do scientists generally think that liquid water is necessary for the origin of life?
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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?
What is the best way to determine if a exoplanet has life inside it?
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Detect the star the exoplanet is orbiting and compare it to the Sun.
Detect the exoplanet and determine if it is in the habitable zone of the star.
Detect the exoplanet and study the atmosphere of the exoplanet.
Detect the exoplanet and determine its age to see if it is similar to the age of the Earth.
Chapter 27 Solutions
Universe: Stars And Galaxies
Ch. 27 - Prob. 1QCh. 27 - Prob. 2QCh. 27 - Prob. 3QCh. 27 - Prob. 4QCh. 27 - Prob. 5QCh. 27 - Prob. 6QCh. 27 - Prob. 7QCh. 27 - Prob. 8QCh. 27 - Prob. 9QCh. 27 - Prob. 10Q
Ch. 27 - Prob. 11QCh. 27 - Prob. 12QCh. 27 - Prob. 13QCh. 27 - Prob. 14QCh. 27 - Prob. 15QCh. 27 - Prob. 16QCh. 27 - Prob. 17QCh. 27 - Prob. 18QCh. 27 - Prob. 19QCh. 27 - Prob. 20QCh. 27 - Prob. 21QCh. 27 - Prob. 22QCh. 27 - Prob. 23QCh. 27 - Prob. 24QCh. 27 - Prob. 25QCh. 27 - Prob. 26QCh. 27 - Prob. 27QCh. 27 - Prob. 28QCh. 27 - Prob. 29QCh. 27 - Prob. 30QCh. 27 - Prob. 31QCh. 27 - Prob. 32QCh. 27 - Prob. 33Q
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- Mars and Europa are two Solar System bodies that are considered possible habitats for Earth-like life. Why?arrow_forwardIf we do find life on Mars, what might be some ways to check whether it formed separately from Earth life, or whether exchanges of material between the two planets meant that the two forms of life have a common origin?arrow_forwardWhy is liquid water generally considered necessary for the origin of life?arrow_forward
- What are the three requirements that scientists believe an environment needs to supply life with in order to be considered habitable?arrow_forwardWhy was the development of photosynthesis a major milestone in the evolution of life?arrow_forwardWhat is a biomarker? Give some possible examples of biomarkers we might look for beyond the solar system.arrow_forward
- What are the advantages to using radio waves for communication between civilizations that live around different stars? List as many as you can.arrow_forwardWhat is a habitable zone?arrow_forwardWhat are some reasons that more advanced civilizations might want to send out messages to other star systems?arrow_forward
- How can a planet’s atmosphere affect the width of the habitable zone in its planetary system?arrow_forwardA radio broadcast left Earth in 1911. How far in light years has it traveled? If there is, on average, 1 star system per 400 cubic light years, how many star systems has this broadcast reached? Assume that the fraction of these star systems that have planets is 0.50 and that, in a given planetary system, the average number of planets that have orbited in the habitable zone for 4 billion years is 0.20. How many possible planets with life could have heard this signal?arrow_forwardis it possible to live in other planets?arrow_forward
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