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 27Q
To determine
The reason why telescopes that would look for the infrared spectra of other planets need to be placed in space.
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Chapter 27 Solutions
Universe: Stars And Galaxies
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- At what average distances from the Sun would you expect to find Kirkwood gaps where the orbital period of asteroids are respectively one-third, and one-quarter, of the orbital period of Jupiter? Compare your results with Figure 24-9. (Hint: Use Keplers third law, Eq. 4-1.)arrow_forwardHow close to Uranus would a spacecraft have to get to obtain the same resolution as in Example 12.1 with a camera that has an angular resolution of 2 arcsec?arrow_forwardWhich molecules and atoms are Jupiter and Saturn able to retain in their atmospheres that cant be retained in Earths atmosphere? (Hints: See Table 22-1 and Figure 21-11.)arrow_forward
- As the Voyager spacecraft penetrated into the outer solar system, the illumination from the Sun declined. Relative to the situation at Earth, how bright is the sunlight at each of the jovian planets?arrow_forwardWhat are the main challenges involved in sending probes to the giant planets?arrow_forwardIf you were to record the spectrum of Saturn as well as the A ring, you would find light from one edge of the rings red shifted and light from the other edge blueshifted. If you observed a spectral line at a wavelength of 500.000 nm, what difference in wavelength should you expect between the opposite edges of the rings? (Hints: See Problem 9, and use the formula for Doppler shift, Eq. 7-3.)arrow_forward
- We have a lot of good images of the large moons of Jupiter and Saturn from the Galileo and Cassini spacecraft missions (check out NASA’s Planetary Photojournal site, at http://photojournal.jpl.nasa.gov, to see the variety). Now that the New Horizons mission has gone to Pluto, why don’t we have as many good images of all sides of Pluto and Charon?arrow_forwardWhy would a tourist brochure (of the future) describing the most dramatic natural sights of the giant planets have to be revised more often than one for the terrestrial planets?arrow_forwardGiven the size of Tritons orbit (r = 355,000 km) and its orbital period (P = 5.88 days), calculate the mass of Neptune. (Hint: Use the formula for circular velocity, Eq. 5-1a. The formula requires input quantities in kg and m.)arrow_forward
- Suppose you send a probe to land on Mercury, and the probe transmits radio signals to Earth at a wavelength of 10.0000 cm. You listen for the probe when Mercury is moving away from Earth at its full orbital velocity of 48 km/s around the Sun. What wavelength would have to tune your radio telescope to detect that signal? (Hint: Use the Doppler shift formula, Eq. 7-3.) (Note: The speed of light is 3.0 105 km/s.)arrow_forwardWhich step(s) listed in the previous question can be eliminated in models that form Jovian planets in thousands of years, a time frame that solves the Jovian problem? Order the following steps in the formation of a Terrestrial planet chronologically: gravitational collapse, accretion, outgassing, condensation, and differentiation.arrow_forwardAt what average distances (in AU) from the Sun would you expect to find Kirkwood gaps where the orbital period of asteroids are respectively four-ninths, and three-sevenths, of the orbital period of Jupiter? (Hint: use Kepler's third law.) inner gap at_______ AU outer gap at_______ AUarrow_forward
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