Cambridge Dictionary of Astronomy - Paperbackby Jacqueline Mitton (Author) Held up by the heliopause? Floored by the flatness problem? Intimidated by MACHOs? With the Cambridge Astronomy Dictionary you'll no longer be defeated by such astronomical jargon These and 3,200 additional words, names, and abbreviations used in amateur and professional astronomy, are clearly and concisely defined. Entries include information from modern and classical astronomy, including: A comprehensive selection of