1970 – Vietnam War: Kent State shootings: The Ohio National Guard, sent to Kent State University after disturbances in the city of Kent the weekend before, opens fire killing four unarmed students and wounding nine others. The students were protesting the Cambodian Campaign of the United States and South Vietnam.

1973 – The Dark Side of the Moon by Pink Floyd, recorded in Abbey Road Studios goes to number one on the US Billboard chart, beginning a record-breaking 741-week chart run.

1986 – The Chernobyl disaster occurs in the Ukrainian Soviet Socialist Republic.

1954 – The first practical solar cell is publicly demonstrated by Bell Telephone Laboratories.

1953 – Francis Crick and James Watson publish "Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid" describing the double helix structure of DNA.

1990 – STS-31: The Hubble Space Telescope is launched from the Space Shuttle Discovery.

1914 – First baseball game at Wrigley Field, then known as Weeghman Park, in Chicago.

 Red_Dragon wrote: 
Dude! Stop looking into my house with your telescope.  

 miamizsun wrote:
True, but apples and oranges.

 miamizsun wrote:

Will it revolutionize the mousetrap? Or not?

 Red_Dragon wrote:

cost then? around 2.7 billion dollars

cost today? depends, but less than 1 thousand dollars

the price drop in sequencing stunning

this tool/tech will revolutionize healthcare and a lot more

2014 – NASA's Kepler space telescope confirms the discovery of the first Earth-size planet in the habitable zone of another star.

2003 – The Human Genome Project is completed with 99% of the human genome sequenced to an accuracy of 99.99%.

1865 – U.S. President Abraham Lincoln is shot in Ford's Theatre by John Wilkes Booth; Lincoln lives till the following day.

1953 – CIA director Allen Dulles launches the mind-control program Project MKUltra.

1968 – President Lyndon B. Johnson signs the Civil Rights Act of 1968, prohibiting discrimination in the sale, rental, and financing of housing.

1970 – Paul McCartney announces that he is leaving The Beatles for personal and professional reasons.

1968 – Martin Luther King Jr. is assassinated by James Earl Ray at a motel in Memphis, Tennessee.