Posts Tagged ‘Halley’s Comet’

Rosetta Arrives


Comets have fascinated human beings for longer than recorded history. They are beautiful, unpredictable and not well understood. The Greeks thought of them as stars with long hair. The Chinese kept records of comets dating from 1600 BC. It wasn’t until 1705 that scientists realized that some comets orbit the sun on a regular timetable. […]