On this Day in History

On this Day in History in 239 B.C.E.: 1st recorded perihelion passage of Halley’s Comet.
 
On this Day in History in 1964: “Jeopardy” debuted on NBC-TV.
 
On this Day in History in 1867: US buys Alaska from Russia for $7,200,000 (2 cents an acre – Seward’s Folly).

On this Day in History

On this Day in History in 141: 6th recorded perihelion passage of Halley’s Comet.
 
On this Day in History in 1345: Saturn/Jupiter/Mars-conjunction: thought “cause of plague epidemic”
 
On this Day in History in 1964: ESRO established, European Space Research Organization.
 
On this Day in History in 1979: Columbia flies on Shuttle carrier aircraft to Kennedy Space Center.