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Who was the first person to know gravity?
The first person to exist - He/She would have realised that they did not float off into space.
How is air pulled towards earth?
During the formation of the Earth, various gases were released from the surface, including carbon dioxide, nitrogen, and water vapor. Once the Earth reached a large enough mass, it had enough gravity that these gases didn't drift off into space; they were held to the surface by gravity. Earth's magnetic field also helps to keep the atmosphere on Earth, by shielding it from solar winds that would otherwise bombard the atmosphere and send its gases into space. The Moon has no atmosphere because its mass is too low, and thus it doesn't have enough gravity to hold onto an atmosphere. In addition, it has no significant magnetic field. Mars may have once had a much denser atmosphere, but it lost its magnetic field billions of years ago, and solar winds eroded the atmosphere until it became very thin, like it is today.
Why did the Hubble telescope take off into space?
The problem with ground based telescopes is that the atmosphere distorts images, The Hubble space telescope is above the atmosphere and therefore can view with much better clarity.
Why does a satellite not fly off into space from the earth's atmosphere?
because the earth's gravity keeps it in place
Why did the space shuttle Columbia come to a disaster?
On blast off, a small piece of foam hit the wing, creating a small hole. On re-entry to the atmosphere the wing began to burn at that location due to hot gases getting in and a fire spread. This is what eventually destroyed Columbia.
Why does the air not not float into space?
The gravitational attraction of the Earth keeps the atmosphere from floating off into space
Gases in Mercury's atmosphere?
Mercury has no atmosphere. Cosmic rays from the sun burn the gases off.
Explain how earth's mass is related to its ability to have an atmosphere?
The Earth has an atmosphere because it has the gravity necessary to keep the gases from floating off into space. The more mass a planet has, the more gravity it has, and the more gravity it has, the thicker an atmosphere it can sustain.
What happens when we let all of the Earth's helium float off into space?
If we let all of Earth's helium float off into space, we will not be able to replace it. Helium is a very important resource because it can be cooled to very low temperatures and exist as a liquid. It's used in MRI machines to cool the superconducting magnets, for instance. When used for cryogenic purposes, it's allowed to boil off into the atmosphere, where it floats up into space and is lost forever.
What prevents gases flying off onto space?
gravity.
What keeps us from foating off into the sky?
Our Earth's gravity ensures we don't float off into space.
Is it safe to sleep in a car in a garage with the car off?
Yes, because when a car is off, no noxious gases are released. However, if the car is on in a closed space, the space will eventually fill up with poison gases and it will not be safe.
What gas is given off into the atmosphere due to the split of water?
There are two gases: hydrogen and oxygen.
Is Friction the most important force on Earth?
and because we would float off into space
If there was no gravity why do people say there would be no oxygen?
Gravity holds things down to Earth (or any other body in space). The oxygen only stays on earth because of this gravity. Without gravity, oxygen and our whole atmosphere would just disperse and float off into space.
If you jump off the moon would you hit the earth?
1. No 2. no, you would float in space!!
How can you live on Mars?
it is possible to live on Mars but to do this you would need an atmosphere, and to have an atmosphere you need gases. To make these gases (there have been discussions about this) you would need to build factories to give off green house gases and make an atmosphere, because Mars is extremely cold at night, then we would have to get people to Mars. This would cost billions and would take a long time to build the atmosphere.
