Calorie
In space and astronautical engineering, a calorie is a unit of energy measurement used to describe the amount of energy required to raise the temperature of one gram of water by one degree Celsius. This unit is commonly used to measure the energy content of food and the energy expended during physical activity. In space missions, the calorie is an important unit of measurement for determining the energy requirements of astronauts and the amount of food and water needed for a mission. The calorie is also used to measure the energy output of spacecraft engines and the amount of fuel needed for a mission.
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