The purpose of a space suit is to keep astronauts alive in outer space, as the extreme temperatures and lack of an atmosphere mean instant death for a human. Astronauts also wear suits inside the spacecraft sometimes in case cabin pressure drops suddenly, and they wear them when they are performing work on the exterior of the space ship.Know More
Astronauts have worn space suits in a variety of contexts, such as walks on the lunar surface, work at the International Space Station, making repairs to such items as the Hubble telescope and returning to the Earth. Soviet astronaut Yuri Gagarin was the first human to wear a space suit in outer space, as he donned the Soviet SK-1 suit for his voyage.
The most modern space suits still feature the pressure garment inside but also contain a set of environmental machinery that keep the astronaut comfortable and make bending the limbs as easy as possible. The pressure suit tends to stiffen in the presence of a vacuum, and modern suits are designed to counteract that. The suits also contain an entire oxygen supply and environmental control mechanism so that the astronaut has wholly independent movement when he is outside the spacecraft.Learn more about Space Travel
Astronauts float in space because they and the spacecraft in which they are traveling are orbiting the Earth in a free-fall trajectory that matches the curvature of the planet. By free falling around the Earth, the astronauts and their spacecraft avoid burning up in the atmosphere.Full Answer >
According to Universe Today, astronauts use radio waves to communicate with Earth and between craft in space. While these waves travel at the speed of light, the long distances involved can induce delays in conversation between Earth and astronauts on long-distance missions.Full Answer >
Astronauts drink in space by using special equipment, such as internally pressurized bottles, collapsible pouches, drinking tubes and coffee cups designed to function in zero gravity. Available drinks include coffee, tea, fruit punches, juice and lemonade.Full Answer >
According to the National Aeronautics and Space Administration, astronauts are sent into space to operate the International Space Station, help develop commercial spaceflight, investigate the possibilities of human exploration of deep space, develop new technologies and conduct research in a wide range of scientific fields. Many aspects of scientific studies of the Earth and the rest of the universe are easier to conduct from space.Full Answer >