On June 3, 1965, 120 miles above the Earth, Major Edward H. White II opens
the hatch of the Gemini 4 and steps out of the capsule, becoming the first
American astronaut to walk in space.

SANDY KOZEL

On this day in 1970, an oxygen tank exploded on Apollo 13,
preventing a planned moon landing.

TIM MAGUIRE

Originally scheduled for 12 March 1970, Apollo 13 left the launch 
Pad at 2:13 EST 11 April 1970.

The crew of Apollo 13: from left – James A. Lovell, Jr, John L.
Swigert, Jr., and Fred W. Haise, Jr.

On this day in 1969, Apollo 11, the U.S. spacecraft that had taken the
first astronauts to the surface of the moon, safely returned to Earth and splashed down in the Pacific Ocean.

United States President Richard Nixon was in the central Pacific recovery area
to welcome the Apollo 11 astronauts aboard the USS Hornet, prime recovery
ship for the historic Apollo 11 lunar landing mission, on July 24, 1969. The
Apollo 11 astronauts are, from left, Neil Armstrong, Michael Collins and Buzz
Aldrin. They were quarantined after splashdown to ensure they did not bring
back any contamination from the moon.

Christopher Columbus Kraft Jr. (February 28, 1924 – July 22, 2019)

(AP) – Behind America’s late leap into orbit and triumphant small step on the
moon was the agile mind and guts-of-steel of Chris Kraft, making split-second decisions that propelled the nation to once unimaginable heights.

Kraft, the creator and longtime leader of NASA’s Mission Control, died  today
in Houston, just two days after the 50th anniversary of what was his and
NASA’s crowning achievement: Apollo 11’s moon landing. He was 95.

Neil Armstrong, the first man-on-the-moon, told The Associated Press in 2011, “Christopher Columbus Kraft Jr. never flew in space, but "held the success
or failure of American human spaceflight in his hands."

Then-President Ronald Reagan (center) being briefed by Chris Kraft (right) in Johnson Space Center’s Mission Control Center in Houston,
in November 1981. (NASA via AP, File)