Universe: Stars And Galaxies
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 16, Problem 59Q
To determine

The features that a real spaceship should have in order to survive a flight that courses on a trajectory that passes close to the surface of the Sun.

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Kepler’s First Law: Elliptical Planetary Orbits:     The solar system major planet in the most elliptical solar orbit is little Mercury, which is the closest planet to the Sun. At Perihelion, Mercury’s distance from the Sun (Rp) is 0.31 AU. At Aphelion, Mercury’s distance from the Sun (Ra) is 0.47 AU.             The intensity of Sunlight (I) that a planet receives from the Sun is inversely proportional to the square of that planet’s distance from the Sun (R). in other words,                                             I  = Constant / R2.   Calculate how much more intense the Sunlight received by Mercury is at perihelion (p)  than at aphelion (a):   Rp2 =                          Ra2    =                 Ip / Ia =  Ra2 / Rp2 =
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