NASA’s Explorer 49 was launched into Earth’s orbit to research long-range radio waves within the Milky Way.
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In London, the Millenium Bridge closed for safety checks following large crowds, which caused the bridge to start swaying.
President Franklin Roosevelt became the first president to travel abroad during war.
The Opportunity Mars rover sent its last signal to Earth.
Italy declared war on France and Britain.
Alcoholics Anonymous was founded in Akron, Ohio.
