Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Great Comet of 1577 was a comet that passed close to Earth during the year 1577 AD. It was viewed by people all over Europe, including famous Danish astronomer Tycho Brahe. From his observations of the comet, Brahe was able to discover that comets and similar objects travel above the Earth's atmosphere. The most recent intelligence suggests that the comet is currently about 300 AU from the Sun.