The Solar System

CHAPTER 24 | URANUS, NEPTUNE, AND THE DWARF PLANETS 533 these rings coincides with the orbit of the small moon Mab and is probab ...

PART 4 | THE SOLAR SYSTEM The eccentricity of the ε ring is apparently caused by the eccentric orbits of Ophelia and Cordelia. T ...

The rings of Neptune are bright in forward-scattered light, as in the image above, and that indicates that the rings contain sig ...

536 PART 4^ |^ THE SOLAR SYSTEM moons orbiting Uranus. Roughly 30 are currently known, but there are almost certainly more to be ...

CHAPTER 24 | URANUS, NEPTUNE, AND THE DWARF PLANETS 537 the other regions. Ariel may have been subject to tidal heating caused b ...

538 PART 4^ |^ THE SOLAR SYSTEM planet formation in the solar nebula suggest that Uranus and Neptune formed closer to the sun, i ...

CHAPTER 24 | URANUS, NEPTUNE, AND THE DWARF PLANETS 539 Original papers related to Adam’s calculations were lost for decades, bu ...

540 PART 4^ |^ THE SOLAR SYSTEM that, as in the case of Uranus, its blue-green color was caused by methane in its hydrogen-rich ...

CHAPTER 24 | URANUS, NEPTUNE, AND THE DWARF PLANETS 541 Visual-wavelength image from Voyager 2 Neptune in 1989 1996 2002 1998 Vi ...

542 PART 4^ |^ THE SOLAR SYSTEM as sunlight converted methane into organic compounds. Triton’s south pole had been turned toward ...

CHAPTER 24 | URANUS, NEPTUNE, AND THE DWARF PLANETS 543 Neptune’s magnetic fi eld is peculiar, and its moons and rings also dese ...

544 PART 4^ |^ THE SOLAR SYSTEM Th e observatory director turned to other projects, and Tombaugh, working alone, expanded his se ...

CHAPTER 24 | URANUS, NEPTUNE, AND THE DWARF PLANETS 545 Th e discovery of Pluto’s moons is important for a number of reasons. Ch ...

546 PART 4^ |^ THE SOLAR SYSTEM The Family of Dwarf Planets Perhaps the most interesting thing about Pluto is that it is not alo ...

CHAPTER 24 | URANUS, NEPTUNE, AND THE DWARF PLANETS 547 abandoned. It is hard to understand how Pluto could have escaped from Ne ...

548 PART 4^ |^ THE SOLAR SYSTEM planet migration could have scattered small bodies throughout the solar system and caused the ap ...

Summary ▶ Uranus was discovered by William Herschel in 1781. ▶ Although Uranus is a Jovian planet, it is signifi cantly smaller ...

550 PART 4^ |^ THE SOLAR SYSTEM What is the orbital velocity of Miranda around Uranus? (Hints: See Chapter 5, and look in the A ...

Artist’s conception 551 Guidepost In Chapter 19 you began your study of planetary astronomy by considering evidence about how ou ...

552 PART 4^ |^ THE SOLAR SYSTEM there but because they are easy to recognize. No Earth rocks are on top of the Antarctic ice cap ...