In what year did the 'Harlem Shake' meme go viral?

In what year was Twitter founded?

In what year was Intel founded?

In what year did LIGO announce the first direct detection of gravitational waves?

In what year was Amazon founded?

What is the speed of light in vacuum, in meters per second, as defined exactly by the SI?

In what year did Alan Shepard become the first American in space?

In what year did Einstein publish the special theory of relativity?

In what year did Elvis Presley die?

What is the atomic number of uranium?

How many chromosomes does a typical human somatic cell have?

In what year did the Suez Crisis occur?

In what year did the Space Shuttle Columbia disaster occur?

How many bones are in the adult human body, by the standard count?

In what year was the Coachella festival first held?

In what year did the Beatles release the album Abbey Road?

In what year did the Berlin Wall fall?

In what year was the Woodstock music festival held?

In what year was Michael Jackson's album Thriller released?

In what year was Bob Dylan awarded the Nobel Prize in Literature?

In what year was MTV launched?

In what year was Nirvana's album Nevermind released?

In what year did the Eurovision Song Contest first take place?

How many planets are in the Solar System under the International Astronomical Union's 2006 definition?

In what year did the Rock and Roll Hall of Fame museum open in Cleveland?