Reggie Jackson became the first major leaguer to strike out 2,000 times.
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Three astronauts, Richard J. Hieb, Thomas D. Akers, and Pierre J. Thuot, simultaneously walked in space for the first time.
An assassination attempt was made on Pope John Paul II.
The first four-engine aircraft was built and flown by Igor Sikorsky.
A new study was published in the journal 'Nature Geoscience,' which showed that the moon is still shrinking with recent moonquakes as it cools.
The first US airmail stamps were issued, costing 24 cents.
