On Nov. 16, 1973, President Richard Nixon signed the Trans-Alaska Pipeline Authorization Act into law, authorizing the construction of an 800-mile (1,290-kilometer) oil pipeline from the Alaska North Slope to the port city of Valdez.

On Oct. 22, 2012, cyclist Lance Armstrong was formally stripped of his seven Tour de France victories and received a lifetime ban from Olympic sports after the International Cycling Union chose not to appeal doping charges against Armstrong by the United States Anti-Doping Agency.

On Aug. 13, 1961, on what would become known as Barbed Wire Sunday, East Germany sealed the border between Berlin's eastern and western sectors before building a wall that would divide the city for the next 28 years.

Four astronauts are on their way to the International Space Station after being sidelined by Boeing's Starliner trouble and other issues. SpaceX launched the U.S.-Japanese-Russian crew from Florida on Friday. They should reach the space station this weekend, replacing colleagues who launched in March as fill-ins for NASA's two stuck astronauts. Leading the taxi flight for NASA is Zena Cardman. She was yanked from a SpaceX flight last year to make room for Starliner's test pilots whose capsule was judged too dangerous to fly. Two of her crewmates were also training on Starliner, which remains grounded until next year.

On July 24, 1969, the Apollo 11 astronauts — two of whom had been the first humans to set foot on the moon — splashed down safely in the Pacific.

Elon Musk is dialing back his threat to decommission a capsule used to take astronauts and supplies to the International Space Station for NASA. The threat came as President Donald Trump and Musk argued on social media on Thursday. Trump said he could cut government contracts given to Musk's rocket company, SpaceX. Musk responded by saying SpaceX will begin decommissioning its Dragon spacecraft. It was unclear how serious he was, but he later posted he wouldn't withdraw the capsule. SpaceX is the only U.S. company capable right now of transporting crews to and from the space station, using its four-person Dragon capsules.

On April 24, 1916, Irish republicans launched the Easter Rising, a rebellion against British rule in Ireland. Though the rebels surrendered to British forces six days later, the uprising set the stage for republican victories in the Irish general election of 1918 and the establishment of the Irish Free State via the Anglo-Irish Treaty in 1922.

Blue Origin has launched Jeff Bezos' fiancee Lauren Sanchez into space with an all-female celebrity crew that included Katy Perry and Gayle King. The New Shepard rocket blasted off Monday from West Texas. Sanchez, a helicopter pilot and former TV journalist, invited the others along for the 10-minute, fully automated ride. Besides Sanchez, Perry and King, the crew included a film producer, a former NASA engineer who started her own companies to promote science education, and a scientist who now advocates for sexual violence survivors. Moved by the views of Earth below, Perry couldn't resist singing "What a Wonderful World" in space.