The light-year is commonly used term in popular science. What does the term mean and why is it useful?

Ordinarily, the answer is no. But although sound cannot travel in a vacuum, there are conditions in space that allow sound to carry.

What are black holes? Do they really exist? A beginner´s snapshot of these mysterious objects.

Astronomy or astrology? Astrobiology or exobiology? Many astronomy terms are similar, causing confusion – what are the differences between these common terms?

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Stephen P. Maran's Astronomy For Dummies is an excellent reference for those interested in taking up stargazing.