Astronomy Today @ y t
Eighth Edition @yt
Eric Chaisson
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Harvard University
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Steve McMillan
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Drexel University
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ISBN @yt 10-digit: @ y t 0-321-91008-7; @ y t ISBN @yt 13-digit: @ y t 978-0-321-91008-0
,Contents
yt
@
Chapter @yt1 Charting @ytthe @ytHeavens: @ytThe @ytFoundations @ytof @ytAstronomy .................................... 1
Chapter @yt2 The @ytCopernican @ytRevolution: @ytThe @ytBirth @ytof @ytModern @ytScience ........................... 18
Chapter @yt3 Radiation: @ytInformation @ytfrom @ytthe @ytCosmos ............................................................... 36
Chapter @yt4 Spectroscopy: @ytThe @ytInner @ytWorkings @ytof @ytAtoms...................................................... 56
Chapter @yt5 Telescopes: @ytThe @ytTools @ytof @ytAstronomy ...................................................................... 73
Chapter @yt6 The @ytSolar @ytSystem: @ytComparative @ytPlanetology @ytand @ytFormation @ytModels .......... 92
Chapter @yt7 Earth: @ytOur @ytHome @ytin @ytSpace ..................................................................................... 118
Chapter @yt8 The @ytMoon @ytand @ytMercury: @ytScorched @ytand @ytBattered @ytWorlds ............................ 136
Chapter @yt9 Venus: @ytEarth’s @ytSister @ytPlanet...................................................................................... 156
Chapter @yt10 Mars: @ytA @ytNear @ytMiss @ytfor @ytLife?................................................................................ 173
Chapter @yt11 Jupiter: @ytGiant @ytof @ytthe @ytSolar @ytSystem ...................................................................... 191
Chapter @yt12 Saturn: @ytSpectacular @ytRings @ytand @ytMysterious @ytMoons............................................ 209
Chapter @yt13 Uranus @ytand @ytNeptune: @ytThe @ytOuter @ytWorlds @ytof @ytthe @ytSolar @ytSystem .............. 228
Chapter @yt14 Solar @ytSystem @ytDebris: @ytKeys @ytto @ytOur @ytOrigin ........................................................ 247
Chapter @yt15 Exoplanets: @ytPlanetary @ytSystems @ytBeyond @ytOur @ytOwn............................................. 267
Chapter @yt16 The @ytSun: @ytOur @ytParent @ytStar ....................................................................................... 280
Chapter @yt17 The @ytStars: @ytGiants, @ytDwarfs, @ytand @ytthe @ytMain @ytSequence ..................................... 301
Chapter @yt18 The @ytInterstellar @ytMedium: @ytGas @ytand @ytDust @ytamong @ytthe @ytStars ......................... 321
Chapter @yt19 Star @ytFormation: @ytA @ytTraumatic @ytBirth........................................................................ 339
Chapter @yt20 Stellar @ytEvolution: @ytThe @ytLife @ytand @ytDeath @ytof @yta @ytStar .......................................... 359
Chapter @yt21 Stellar @ytExplosions: @ytNovae, @ytSupernovae, @ytand @ytthe @ytFormation @ytof @ytthe @ytElements
380
Chapter @yt22 Neutron @ytStars @ytand @ytBlack @ytHoles: @ytStrange @ytStates @ytof @ytMatter ......................... 399
Chapter @yt23 The @ytMilky @ytWay @ytGalaxy: @ytA @ytSpiral @ytin @ytSpace .................................................... 420
Chapter @yt24 Galaxies: @ytBuilding @ytBlocks @ytof @ytthe @ytUniverse ......................................................... 439
Chapter @yt25 Galaxies @ytand @ytDark @ytMatter: @ytThe @ytLarge-Scale @ytStructure @ytof @ytthe @ytCosmos .. 459
Chapter @yt26 Cosmology: @ytThe @ytBig @ytBang @ytand @ytthe @ytFate @ytof @ytthe @ytUniverse ........................ 479
Chapter @yt27 The @ytEarly @ytUniverse: @ytToward @ytthe @ytBeginning @ytof @ytTime.................................... 497
Chapter @yt28 Life @ytin @ytthe @ytUniverse: @ytAre @ytWe @ytAlone? ............................................................... 516
, Chapter 1 Charting the Heavens:
The Foundations of Astronomy
1.1 True/False Questions
1) The distances to bodies in the solar system are a few light minutes to light hours.
Answer: TRUE
Diff: 2
Section Ref: 1.1
2) A light-year is a measurement of time.
Answer: FALSE
Diff: 1
Section Ref: 1.1
3) It was Aristotle who used the scientific method to show the Earth was a sphere.
Answer: TRUE
Diff: 2
Section Ref: 1.2
4) Constellations are close clusters of stars, all at about the same distance from the Sun.
Answer: FALSE
Diff: 1
Section Ref: 1.3
5) From the South Pole, Polaris would appear directly overhead.
Answer: FALSE
Diff: 1
Section Ref: 1.3
6) Only at the equator are all the stars visible over the course of the year.
Answer: TRUE
Diff: 1
Section Ref: 1.3
7) Over the course of a night, Polaris moves less than any other visible star in the sky.
Answer: TRUE
Diff: 2
Section Ref: 1.3
8) There are 3,600 arc seconds in a degree.
Answer: TRUE
Diff: 2
Section Ref: More Precisely 1-1
9) At apogee, the Moon is at its farthest from Earth and thus appears smaller than normal.
Because of this it can produce only annular solar eclipses, but not total solar eclipses.
Answer: TRUE
Diff: 2
Section Ref: 1.5
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