On this Day in History

On this Day in History in 1066: Halley’s Comet sparks English monk to predict country will be destroyed.
 
On this Day in History in 1184 B.C.: The Greeks enter Troy using the Trojan Horse (traditional date).

On this Day in History

On this Day in History in 295: 8th recorded perihelion passage of Halley’s Comet.
 
On this Day in History in 1702: Comet C/1702 H1 approaches within 0.0437 AUs of Earth.
 
On this Day in History in 1902: Marie & Pierre Curie isolate the radioactive element radium chloride.
 
On this Day in History in 1940: The First electron microscope was demonstrated by RCA.

On this Day in History

On this Day in History in 1904: US Congress authorizes Lewis & Clark Expo $1 gold coin.
 
On this Day in History in 837: Best view of Halley’s Comet in 2000 years.
 
On this Day in History in 1970: Apollo 13 announces “Houston, we’ve got a problem!” as Beech-built oxygen tank explodes en route to Moon.

On this Day in History

On this Day in History in 837: Comet 1P/837 F1 (Halley) approaches within 0.0334 AUs of Earth.
 
On this Day in History in 1710: The first law regulating copyright is issued in Great Britain.
 
On this Day in History in 1930: The first synthetic rubber was produced.

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.