On this Day in History in 1802: Heinrich Wilhelm Matthäus Olbers discovers 2 Pallas, the second asteroid known to man.
On this Day in History in 1773: The Whirlpool Galaxy was discovered by Charles Messier.
On this Day in History in 1848: Hyperion, moon of Saturn, discovered by Bond (US) & Lassell (England).
On this Day in History: Some group of peoples were persecuted, some Pope did something, something was discovered, politicians lied, the general populace were fucked over by some douche bag in power, and they liked it, because they have no backbone.
On this Day in History in 1936: Radium E. became the first radioactive substance to be produced synthetically.
On this Day in History in 1820: Edward Bransfield aboard Williams discovers Antarctica (UK claim.)