A protective suit worn by astronauts in space that provides air, temperature control, and pressure regulation.
From 'space' + 'suit,' a 20th-century compound word created when humans began preparing for space travel. The concept didn't exist before spaceflight became possible.
A spacesuit is basically a tiny personal spaceship you wear—it's one of the most sophisticated pieces of engineering ever made, with systems for air, temperature, pressure, and even waste management, yet it weighs less than you'd think.
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