As If there were not enough problems, Houston still had not completed the command module power up checklist.
From beneath the Lunar Modules floor there was a thud, then a hiss, then another thump that vibrated through the cabin.
Swigert counted down five, four, three, two, one.”
Lovell pressed the big red engine button set in the bulkhead and once again felt the vibration below his feet.
“Ignition,” Lovell said to his crew-mates.
In the White House, President Nixon was very concerned for the Apollo 13 crew. Since Apollo 8’s successful lunar orbit, just one month before his inauguration, Nixon had developed a fascination with moon flight and a special admiration for the crew of that first circumlunar trip.
At the manned spacecraft center in Houston, Don Arabian was in Building 45 when battery number two in Aquarius’ descent stage exploded.
There was now cause for optimism in Mission Control. At the TELMU station, where the Lunar Module’s environmental signs were being continually monitored, the readings of the carbon dioxide concentrations aboard Aquarius were steadily dropping all day long.
Mariner 4’s primary objective was to conduct closeup scientific observations of Mars and to transmit these observations to Earth. Additional goals included performing field and particle measurements in interplanetary space, and providing experience and knowledge of engineering capabilities for interplanetary flights of long duration…
In a healthy spacecraft, the CO2 meter should climb no higher than 2 or 3 millimeters of mercury. When it rose above 7, the crew was instructed to change their lithium hydroxide canisters. If it was allowed to rise above 15, the first signs of CO2 poisoning would set in.