Florida vacation packages for Hardy. Image credit The Patrick Moore Collection, www.patrickmoorecollection.com. Second, a comet may make a close approach to Earth. The closer a comet comes to our planet, the brighter it seems to human observers even normally dim objects can become remarkably bright when they make close passes by Earth. Among the great comets notable for coming near to Earth is the Great Comet of , which came as close as AU to Earth, and Comet Hyakutake, which came to within AU of Earth on March , Third, a comet may develop a large, bright coma. Florida vacation packages 2016.