On this day in 1962, NASA's Mariner 2 became the first spacecraft to fly by Venus.
On this day in 1964, the Supreme Court of the United States ruled that Congress can use the Constitution's Commerce Clause to fight discrimination.
On this day in 1994, construction began on the Three Gorges Dam on the Yangtze River.
On this day in 2012, twenty-eight people, including a gunman, were killed in Sandy Hook elementary school, Connecticut, USA.