As the biosphere is contained entirely within the troposphere (lowest layer of the atmosphere), an astronaut in orbit is far over 100 miles above the highest portion of the biosphere.
On February 20, 1962, NASA astronaut John Glenn flew the Friendship 7 mission becoming the third American in space and the first American to orbit the Earth circling the earth three times.
Any astronaut would experience weightlessness while orbiting the Earth.Any astronaut would experience weightlessness while orbiting the Earth.Any astronaut would experience weightlessness while orbiting the Earth.Any astronaut would experience weightlessness while orbiting the Earth.
Intimate Strangers Unseen Life on Earth - 1999 Keepers of the Biosphere 1-2 was released on: USA: 1999
The person on the ladder would not feel weightless because they are not in orbit, they are simply at a high altitude. If they let go, they would fall straight down towards the earth's center just as any other object which is being pulled on by gravity.Orbit is achieved through velocity. With enough thrust, a rocket is able to propel an astronaut to a speed which will send him beyond the earth's gravitational field and straight into space (ie: "escape velocity"). However, by controlling the level of thrust and angle of inclination, the astronaut can be placed in an area of space that is somewhere "in-between" the pull of earth's gravity and the escape velocity. This is called "orbital velocity". The astronaut achieves ORBIT, and he is in a constant free-fall circling around the earth: not quite fast enough to escape the earth's gravity, but not so slow that he falls back to earth.When a spacecraft needs to return to earth, thrusters are fired in the direction of orbit, which decreases forward speed, and allows the craft to return to earth via the earth's gravitational field with help from atmospheric drag.
It actually means that the astronaut is in free fall, and doesn't FEEL gravity. Gravity does affect the astronaut, so the astronaut will still be accelerated towards Earth. However, the astronaut won't feel the gravity.
NASA astronaut John Glenn did not travel to the moon. On February 20, 1962, NASA astronaut John Glenn was the first American to orbit the Earth circling the earth three times.
On February 20, 1962, NASA astronaut John Glenn flew the Friendship 7 mission becoming the third American in space and the first American to orbit the Earth circling the earth three times.
John F. Kennedy was President of the United States when NASA astronaut John Glenn became the first American to orbit the Earth circling the earth three times on February 20, 1962.
John Glenn never walked on the moon. NASA astronaut Neil Armstrong was the first person to walk on the moon. NASA astronaut John Glenn was the first American to orbit the Earth circling the earth three times.
John H. Glenn, Jr. John Herschel Glenn Jr. (born July 18, 1921) became the first US astronaut to orbit the Earth, the third US astronaut in space, and the fifth man in space. He flew the capsule Friendship 7 on February 20, 1962, on the "Mercury Atlas 6" mission, circling the globe three times during a flight lasting 4 hours, 55 minutes, and 23 seconds.
Biosphere
On February 20, 1962, NASA astronaut John Glenn flew the Friendship 7 mission becoming the third American in space and the first American to orbit the Earth circling the earth three times.
NASA astronaut John Glenn's February 20, 1962 flight splashed down in the Atlantic Ocean after circling the earth three times.
On February 20, 1962, NASA astronaut John Glenn flew the Friendship 7 mission becoming the third American in space and the first American to orbit the Earth circling the earth three times.
On February 20, 1962, NASA astronaut John Glenn flew the Friendship 7 mission becoming the third American in space and the first American to orbit the Earth circling the earth three times.
The force of gravity on Earth for this astronaut is 50 x 9.8 = 490 Newton. Divide this by 5.6 squared, and you get 15.6 Newton.Note that the astronaut will not feel this force, because he is in free fall; any space capsule he is in will accelerate towards Earth with the same speed as him, and he will feel weightless.
It is actually called the biosphere it is the part of the earth that can support life. That is why Earth is different than other planets, it's because we have a biosphere.