Otolaryngologists are in high demand.
Astronauts - conduct experiments and maintain the space station. Engineers - design and build equipment for experiments and spacecraft. Biologists - study the effects of space travel on living organisms. Physicists - conduct experiments to understand the fundamental laws of nature in microgravity.
It helps scientists know how much of what is needed to make for example the fuel or how much of gases they need to give the astronauts oxygen.
space shuttles
it is so very dangerous to travel if it is not tested by the scientist
So that scientists could investigate the biological effects of space travel without risking the lives of humans.
No, they don't. There is so many (beyond numbers) galaxies that it is impossible to know everything.
A monkey is close to a human so it was to see how a human type system would react into space. Plus, if there had been an accident a monkey would have been lost and not a human. Monkeys can also be trained to do things that would be needed as well.
American space scientists and explorers are often referred to as astronauts. These individuals are trained to travel into space, conduct experiments, and contribute to our understanding of the universe. They play a crucial role in advancing space exploration and technology.
A spacecraft capable of withstanding extreme temperatures and high speeds, such as a space shuttle or a spaceplane, would be needed for travel in the thermosphere. Traditional aircraft are not generally used for travel in this region of the atmosphere due to its thin air density and extreme heat.
Astronauts use instruments that are designed to travel in space and withstand extreme temperatures. Some of these kinds of instruments include a pistol grip tool, a robot crane, safety tethers, and a trace gas analyzer.
No. All E-M waves travel through space at the same speed, known as the"Speed of Light".
Astronauts are the scientists who travel in spacecrafts, conducting research and experiments in space. They are trained to operate in microgravity environments and contribute to various scientific fields such as astronomy, biology, physics, and earth sciences.