From Cape Canaveral, Florida, Navy Commander Alan Bartlett Shepard Jr. is launched into space aboard the Freedom 7 space capsule, becoming the first American astronaut to travel into space. The suborbital flight, which lasted 15 minutes and reached a height of 116 miles into the atmosphere, was a major triumph for the National Aeronautics and Space Administration (NASA).

NASA was established in 1958 to keep U.S. space efforts abreast of recent Soviet achievements, such as the launching of the world’s first artificial satellite–Sputnik 1–in 1957. In the late 1950s and early 1960s, the two superpowers raced to become the first country to put a man in space and return him to Earth. On April 12, 1961, the Soviet space program won the race when cosmonaut Yuri Gagarin was launched into space, put in orbit around the planet, and safely returned to Earth. One month later, Shepard’s suborbital flight restored faith in the U.S. space program.

NASA continued to trail the Soviets closely until the late 1960s and the successes of the Apollo lunar program. In July 1969, the Americans took a giant leap forward with Apollo 11, a three-stage spacecraft that took U.S. astronauts to the surface of the moon and returned them to Earth. On February 5, 1971, Alan Shepard, the first American in space, became the fifth astronaut to walk on the moon as part of the Apollo 14 lunar landing mission.

April 17th, 1970 the capsule from the Apollo 13 mission splashed down in the Pacific Ocean, and the whole world breathed a sigh of relief.

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Apollo 13 launched from Cape Canaveral on April 11, intended to be the third manned lunar landing. The crew — James A. Lovell Jr., John L. Swigert Jr. and Fred W. Haise Jr. — experienced a slight vibration shortly after launch, but things were going normally until 55 hours, 55 minutes into the flight.

Oxygen tank No. 2 exploded, causing No. 1 to fail and start leaking rapidly. Warning lights started blinking. The astronaut’s supplies of air, water, light and electricity were imperiled … 200,000 miles from Earth.

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On April 14, 1865, John Wilkes Booth, an actor and Confederate sympathizer, fatally shoots President Abraham Lincoln at a play at Ford’s Theater in Washington, D.C. The attack came only five days after Confederate General Robert E. Lee surrendered his massive army at Appomattox Court House, Virginia, effectively ending the American Civil War.

Booth, a Maryland native born in 1838, who remained in the North during the war despite his Confederate sympathies, initially plotted to capture President Lincoln and take him to Richmond, the Confederate capital. However, on March 20, 1865, the day of the planned kidnapping, the president failed to appear at the spot where Booth and his six fellow conspirators lay in wait. Two weeks later, Richmond fell to Union forces. In April, with Confederate armies near collapse across the South, Booth hatched a desperate plan to save the Confederacy.

Learning that Lincoln was to attend a performance of “Our American Cousin” at Ford’s Theater on April 14, Booth masterminded the simultaneous assassination of Lincoln, Vice President Andrew Johnson and Secretary of State William H. Seward. By murdering the president and two of his possible successors, Booth and his conspirators hoped to throw the U.S. government into disarray.

On the evening of April 14, 1865, conspirator Lewis T. Powell burst into Secretary of State Seward’s home, seriously wounding him and three others, while George A. Atzerodt, assigned to Vice President Johnson, lost his nerve and fled. Meanwhile, just after 10 p.m., Booth entered Lincoln’s private theater box unnoticed and shot the president with a single bullet in the back of his head. Slashing an army officer who rushed at him, Booth leapt to the stage and shouted “Sic semper tyrannis! [Thus always to tyrants]–the South is avenged!” Although Booth broke his leg jumping from Lincoln’s box, he managed to escape Washington on horseback.

The president, mortally wounded, was carried to a lodging house opposite Ford’s Theater. About 7:22 a.m. the next morning, Lincoln, age 56, died–the first U.S. president to be assassinated. Booth, pursued by the army and other secret forces, was finally cornered in a barn near Bowling Green, Virginia, and died from a possibly self-inflicted bullet wound as the barn was burned to the ground. Of the eight other people eventually charged with the conspiracy, four were hanged and four were jailed.