The last apparition of Halley's Comet was in 1986, approaching Earth as close as 0.4 astronomical units. Halley takes a long journey to visit us. The comet follows an elliptical orbit that reaches ... [+]
It was a wonderfully quiet day at the art gallery. Paintings that were hundreds of years old lined the walls for all to enjoy. It was a wonderfully quiet day until . . . Honk! Everyone in the art gallery came to a halt. None could make sense of what they heard. Had they really heard a honk? "What was that?" "Was that you?""What's going on?" HONK! Everyone looked around in surprise. Another honk had cut through the silence. They all started to look for the source of the noise. "This way!""No, it was this way, I'm sure!""Find that honk!" HONK! HONK! There was no doubt about it: someone or someth
