Edition by Jeffrey O. Bennett | Complete
Chapters
Farthest Galaxies - answer-Modern telescopes see galaxies up to 10 billion light-years.
Solar System Size - answer-Orbits cover area of a typical college campus.
Element Formation - answer-Elements formed by nuclear fusion in stars.
Nuclear Fusion - answer-Combining lighter nuclei to form heavier nuclei.
Cosmic Calendar - answer-Big Bang on January 1; Earth formed in September.
Light Travel Time - answer-Light takes 8.4 minutes from Sun to Earth.
Galaxy Recession Velocities - answer-Galaxy B is 6 times farther than Galaxy A.
Youngest Galaxies - answer-Furthest galaxies appear youngest after Big Bang.
New Horizons Spacecraft - answer-Images from Pluto took 4.6 hours to arrive.
Star Material Recycling - answer-New stars form from ejected gas of previous stars.
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, Sun Composition - answer-Sun mainly consists of hydrogen and helium.
Dark Matter Evidence - answer-Unexpected galaxy rotation velocities indicate dark matter.
Universe Definition - answer-All material, space, and energy that exists.
Orientation at Poles - answer-South Pole person appears upside down to North Pole.
Universe Expansion - answer-Acceleration suggests presence of dark energy.
Hydrogen Formation - answer-Hydrogen formed during the Big Bang.
Milky Way Galaxy - answer-Disk-shaped, 50,000 light-years radius, 100 billion stars.
Observable Universe Galaxies - answer-Estimated to contain billions of galaxies.
Number of stars in our galaxy - answer-Roughly (within a factor of 10) the same as the number
of stars in our galaxy.
Number of stars compared to galaxies - answer-Roughly a thousand times more than the
number of stars in our galaxy.
Naked eye visibility - answer-About as many as the number of stars we see in the sky with our
naked eyes.
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