because of unavailability of gravity.
The first American to orbit the earth was astronaut John Glenn, the name of the spacecraft was a Mercury spacecraft. But it was called The Friendship 7.As there were 7 astronauts chosen in the first batch of astronauts.
Astronauts in their spacecraft (such as the Space Shuttle) are lifted into space by huge rockets which accelerate the craft to "escape velocity" (about 25,000 mph). This puts the craft into orbit around the Earth, its forward velocity balancing the continuous pull of gravity. When they are ready to return to Earth, they use rockets to slow down, and gravity pulls them back out of orbit. When astronauts travelled to the Moon, another smaller rocket pushed the Apollo spacecraft out of orbit, and carried it to the gravitational field of the Moon. Another rocket firing pushed the craft back to Earth. Unmanned space probes have travelled to even farther distances from Earth, including the outer planets Uranus and Neptune. Most of the travel is coasting, because there is practically no matter in space to slow a spacecraft down.
the things that astronauts do on a mission is sleep learning how to fly a space shuttle
A rocket.
the both fly and have a streamlined shape.
The three astronauts to fly to the moon were Neil Armstrong, Edwin Aldrin and Michael Collins.
An astronaut is a person trained to fly in spacecraft. They undergo extensive training to prepare for space missions and must pass rigorous physical and mental exams. Astronauts are responsible for conducting scientific research, operating spacecraft systems, and representing their country's space program.
You may have seen photos or videos of astronauts who appear to be floating through the air while in space. They aren't flying, nor are they really floating, they are falling. Any orbiting spacecraft (such as the space shuttle or international space station) is actually falling around the Earth in a circular pattern. They have achieved enough speed (over 17,000 mph) to continue moving around the Earth without the Earth's gravity pulling the spacecraft down. Astronauts aboard those spacecraft are moving inside the spacecraft and falling along with them at the same speed giving the appearance that they flying or floating inside.
Astronauts or trained pilots typically fly spaceships. They undergo extensive training to operate the spacecraft and navigate through space.
Astronauts are people who fly in space
they were the first 2 astronauts to be launched in the 1st Gemini Spacecraft!
They are in a state of weightlessness caused be the distance from earth. This is because of one of 2 reasons. If the space craft is in a orbit around the planet, the weightlessness is caused by a constant falling towards the planet, but always misses the ground (you can get the same effect if you are inside an airplane dropping towards earth with more the 9.82m/s). If the spacecraft have left the earth gravity alltogether, there are simply no force pulling the astronauts downwards, making them seem to float. Gravity is caused by the fact that materia bend the time/space field in a way that matter is drawn towards one another. You need a very big mass for this affect to be noticeable though, like for example, the mass of Earth on a person.
Aircraft fly through air and spacecraft fly in space.
Yes, astronauts can fly out here and there as they live in zero gravity in space.
To answer this question ask yourself where do airplanes fly and where do spacecraft fly? You can see most airplanes which fly overhead, but spacecraft fly much higher. Airplanes fly within the earth's atmosphere, while spacecraft fly outside the earth's atmosphere in space. So when you decide to ask a sensible question, post it and you may receive a answer.
The first American to orbit the earth was astronaut John Glenn, the name of the spacecraft was a Mercury spacecraft. But it was called The Friendship 7.As there were 7 astronauts chosen in the first batch of astronauts.
the Friendship 7 spacecraft