An <a href="https://en.wikipedia.org/wiki/Oxygen" id="mw0A" rel="mw:WikiLink" title="Oxygen">oxygen</a> tank aboard the <a href="https://en.wikipedia.org/wiki/Apollo_13" id="mw0Q" rel="mw:WikiLink" title="Apollo 13">Apollo 13</a> Service Module explodes, putting the crew in great danger and causing major damage to the <a href="https://en.wikipedia.org/wiki/Apollo_command_and_service_module" id="mw0g" rel="mw:WikiLink" title="Apollo command and service module">Apollo command and service module</a> (codenamed "<i id="mw0w">Odyssey</i>") while en route to the <a href="https://en.wikipedia.org/wiki/Moon" id="mw1A" rel="mw:WikiLink" title="Moon">Moon</a>.