While in orbit 170 miles above Earth, Navy Captain Bruce
McCandless II became the first human being to perform
an untethered spacewalk, when he exits the U.S. space
shuttle Challenger and maneuvers freely, using a bulky
white jet pack of his own design.

McCandless orbited Earth in tangent with the shuttle at
speeds greater than 17,500 miles per hour—the speed
at which satellites normally orbit Earth—and flew up to
320 feet away from the Challenger. After an hour and a
half of testing and flying the jet-powered backpack and
admiring Earth, McCandless safely reentered the shuttle.

Bruce McCandless II
(June 8, 1937 – December 21, 2017)

Debris from the space shuttle Columbia streaks across the
sky over Tyler, Texas.

On February 1, 2003, the space shuttle Columbia brook up while
entering the atmosphere over Texas, killing all seven crew
members on board.

The Columbia‘s 28th space mission, designated STS-107, was
originally scheduled to launch on January 11, 2001, but was
delayed numerous times for a variety of reasons over nearly
two years. Columbia finally launched on January 16, 2003, with
a crew of seven. Eighty seconds into the launch, a piece of foam insulation broke off from the shuttle’s propellant tank and hit the
edge of the shuttle’s left wing.

The Space Shuttle Columbia crew, left to right. Front row:
Rick Husband, Kalpana Chawla, William McCool. Back row: David Brown, Laurel Clark, Michael Anderson and Israeli astronaut Ilan Ramon. (AP file)

The crew of the space shuttle Columbia on the day of launch.

Accident investigators reconstructed space shuttle Columbia from recovered debris.

SANDY KOZEL

(AP)

At 11:38 a.m. EST, on January 28, 1986, the space shuttle
Challenger lifted off from Cape Canaveral, Florida, and
Christa McAuliffe is on her way to becoming the first
ordinary U.S. civilian to travel into space. McAuliffe, a
37-year-old high school social studies teacher from New
Hampshire, won a competition that earned her a place
among the seven-member crew of the Challenger.

Seventy-three seconds later, hundreds on the ground,
including Christa’s family, stared in disbelief as the
shuttle broke up in a forking plume of smoke and fire.

The crew of the Challenger space shuttle. Front row,
from left to right, shows astronauts Mike Smith, Dick
Scobee, Ron McNair and in the rear row, from left to
right, are Ellison Onizuka, school teacher Christa
McAuliffe, Greg Jarvis, and Judith Resnik. (NASA) 

A launch pad fire during Apollo program tests at Cape Canaveral,
Florida, killed astronauts Virgil “Gus” Grissom, Edward H. White II,
and Roger B. Chaffee.

The astronauts, the first Americans to die in a spacecraft, had
been participating in a simulation of the Apollo 1 launch that 
was scheduled for the following month.

The Apollo 1 prime crewmembers intended for the first
manned Apollo space flight: (L to R) Edward H. White II,
Virgil I. "Gus" Grissom, and Roger B. Chaffee.