When Earth passed through the tail of Halley’s Comet during its 1910 approach, there was public fear that a gas discovered in the tail, cyanogen, would destroy all life on the planet, leading to people buying gas masks and “Anti-Comet Pills.”
fact
When Earth passed through the tail of Halley’s Comet during its 1910 approach, there was public fear that a gas discovered in the tail, cyanogen, would destroy all life on the planet, leading to people buying gas masks and “Anti-Comet Pills.”