In August 1684 a handsome young astronomer named Edmond Halley boarded the London coach for Cambridge and sat back to ponder the events that had set him on an important mission. Earlier in the ...

Halley's Comet appears only once every 75 years, sparking excitement among both casual observers and astronomers. Learn what ...

And that is exactly what he and his friend Edmund Halley set out to do ... must have been responsible. Newton’s discovery of gravity was nothing to do with an apple falling!