21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 7, Problem 28QP
To determine
The reason behind that an image of an exoplanet is difficult.
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About how many exoplanets have been detected?
Group of answer choices
2 dozen
a few hundred
a few thousand
a few million
more than a billion
Due 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) false
Describe the Doppler Method of searching for exoplanets.
Chapter 7 Solutions
21st Century Astronomy
Ch. 7.1 - Prob. 7.1CYUCh. 7.2 - Prob. 7.2CYUCh. 7.3 - Prob. 7.3CYUCh. 7.4 - Prob. 7.4CYUCh. 7.5 - Prob. 7.5CYUCh. 7 - Prob. 1QPCh. 7 - Prob. 2QPCh. 7 - Prob. 3QPCh. 7 - Prob. 4QPCh. 7 - Prob. 5QP
Ch. 7 - Prob. 6QPCh. 7 - Prob. 7QPCh. 7 - Prob. 8QPCh. 7 - Prob. 9QPCh. 7 - Prob. 10QPCh. 7 - Prob. 11QPCh. 7 - Prob. 12QPCh. 7 - Prob. 13QPCh. 7 - Prob. 14QPCh. 7 - Prob. 15QPCh. 7 - Prob. 16QPCh. 7 - Prob. 17QPCh. 7 - Prob. 18QPCh. 7 - Prob. 19QPCh. 7 - Prob. 20QPCh. 7 - Prob. 21QPCh. 7 - Prob. 22QPCh. 7 - Prob. 23QPCh. 7 - Prob. 24QPCh. 7 - Prob. 25QPCh. 7 - Prob. 26QPCh. 7 - Prob. 27QPCh. 7 - Prob. 28QPCh. 7 - Prob. 29QPCh. 7 - Prob. 30QPCh. 7 - Prob. 31QPCh. 7 - Prob. 32QPCh. 7 - Prob. 33QPCh. 7 - Prob. 34QPCh. 7 - Prob. 35QPCh. 7 - Prob. 36QPCh. 7 - Prob. 37QPCh. 7 - Prob. 38QPCh. 7 - Prob. 39QPCh. 7 - Prob. 40QPCh. 7 - Prob. 41QPCh. 7 - Prob. 42QPCh. 7 - Prob. 43QPCh. 7 - Prob. 44QPCh. 7 - Prob. 45QP
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- What processes cleared the nebula away and ended planet building?arrow_forwardHow might the presence of a planet the size of Jupiter affect the evolution of the Solar System?arrow_forwardIs there an exoplanet detection method that works better with detecting exoplanets that are at a large distance from their host star? a) none b) radial velocity method c) direct detection d) transit methodarrow_forward
- What is the difference between a centaur and a NEO?arrow_forwardWhich of the following is not a very useful method for detecting an exoplanet? (16.8) (a) the observation of a stars motion (b) the observation of Doppler shifts in the spectrum of a star (c) the detection of alien electromagnetic signalsarrow_forwardExplain the role of impacts in planetary evolution, including both giant impacts and more modest ones.arrow_forward
- Explain why the planet Venus is differentiated, but asteroid Fraknoi, a very boring and small member of the asteroid belt, is not.arrow_forwardWhy did it take astronomers until 1995 to discover the first exoplanet orbiting another star like the Sun?arrow_forwardList three ways in which the exoplanets we have detected have been found to be different from planets in our solar system.arrow_forward
- Present theory suggests that giant planets cannot form without condensation of water ice, which becomes vapor at the high temperatures close to a star. So how can we explain the presence of jovian-sized exoplanets closer to their star than Mercury is to our Sun?arrow_forwardWhy are asteroids and comets important to our understanding of solar system history?arrow_forwardList any similarities between discovered exoplanets and planets in our solar system.arrow_forward
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