Time magazine broke tradition by naming the personal computer its 'Machine of the Year' for 1982, replacing its usual 'Man of the Year' cover in a sign of the coming digital age.

Apple Computer introduced the Lisa, one of the first personal computers sold with a graphical user interface and a mouse, priced at $9,995.

Apple began shipping the Lisa, its first commercial computer with a graphical user interface and mouse, at a steep $9,995 price tag.

President Reagan proposed a space-based missile defense shield in a televised address, launching the controversial Strategic Defense Initiative.

Apple released the Lisa, one of the first commercial personal computers with a graphical user interface and a mouse, priced at nearly $10,000.

Apple released the Lisa, the first mass-market personal computer with a graphical user interface and mouse, priced at a steep $9,995.

Apple launches the Lisa, one of the first personal computers to feature a graphical user interface and mouse aimed at business users.

NASA's Pioneer 10 probe passed beyond the orbit of Neptune, becoming the first human-made object to leave the known planetary boundary of the solar system.

Sally Ride became the first American woman in space aboard Space Shuttle Challenger's STS-7 mission, launching from Kennedy Space Center.

French researchers at the Pasteur Institute published early findings describing a novel retrovirus later identified as the cause of AIDS, a milestone in the fight against the epidemic.

Barbara McClintock's decades of work on genetic transposition, first dismissed, gained fresh momentum as researchers confirmed "jumping genes" across species.

A Soviet fighter jet destroyed a civilian Korean Air Lines Boeing 747 that had strayed into restricted airspace, killing all 269 people aboard.

Soviet officer Stanislav Petrov correctly judged a satellite warning of incoming US nuclear missiles to be a false alarm, likely preventing nuclear war.

Soviet officer Stanislav Petrov judged a satellite warning of incoming US nuclear missiles a false alarm, averting possible retaliatory launch.

Soviet officer Stanislav Petrov judged a satellite warning of incoming US nuclear missiles a false alarm, likely averting nuclear war.

US forces landed on the Caribbean island of Grenada in Operation Urgent Fury, toppling a Marxist government days after a bloody internal coup.

Apple slashed the price of its Lisa computer, the first commercial machine with a graphical user interface and mouse, from $9,995 amid disappointing sales.

Apple's Lisa computer, the first commercial personal computer with a graphical user interface and mouse, went on sale.