Halley’s comet, impending doom and communicating science
On May 18, 1910, Halley’s comet made its closest recorded contact (0.15 astronomical units,* or approximately 23 million kilometres) with our planet, and the Earth passed through its tail. The event was full of scientific excitement and wonder, since photographic plates and spectroscopy were newly available to researchers. With these new tools, astronomers and the public got a better view of the comet itself and also a first inkling of what it contained.
Exciting times for science!
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