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What exactly is the Big Bang theory? What came before it? What is a black hole? How do we now the universe is expanding? These are only five of 50 questions leading North American astronomer Terence Dickinson answers here.
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What exactly is the Big Bang Theory? How do we know the universe is expanding? What is a black hole? Does a Planet X exist? What came before the Big Bang? How many galaxies are in the universe? These are just six of the 50 questions answered in this fact-filled guide to the latest findings and theories in astronomy. Concise yet authoritative, it is the perfect reference for the thoughtful reader who doesn't have the luxury of time.
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