2007-07-31 01:44:26 · 9 answers · asked by blacknwhite93 2 in Science & Mathematics ➔ Astronomy & Space
Much lower. In fact, space is nearly a perfect vacuum, meaning the pressure is almost zero. A pressure of absolute zero should be impossible according to quantum theory, but most of space consists of a much purer vacuum than can be achieved on Earth with current technology.
2007-07-31 01:46:29 · answer #1 · answered by DavidK93 7 · 2⤊ 1⤋
Much lower. As you rise above the earth, the atmosphere thins, reducing the pressure until you reach space (international convention is at 100 km altitude). There the pressure is so close to zero the difference is negligible for almost all purposes. Essentially you are in a vacuum (the absence of any gases).
A vacuum is characterized by how few atoms there are in each volume measurement (usually cubic meters on earth, or even cubic kilometers in space). The fewer the atoms, the "harder" the vacuum, and the lower the pressure.
As you move further from the earth, the hardness of the vacuum increases (i.e. less matter per cubic meter), until you reach the interstellar medium beyond the solar system, which is an incredibly hard vacuum, exceeded only by the vacuum of intergalactic space.
Even the immense light-obscuring dust clouds and star-forming gas clouds of space are extremely rarified vacuums. The reason that we can see them is that they occupy cubic LIGHT-YEARS of space (850 x 10^36 cubic kilometers!!!). Even the very low density of matter can block light over those distances.
2007-07-31 09:00:13 · answer #2 · answered by ianmacpherson55 3 · 2⤊ 0⤋
Space by definition is a vacuum, so assuming you mean "atmospheric pressure," there is none at all in open space.
Occupational stress, on the other hand, may be much higher in space.
2007-07-31 09:35:02 · answer #3 · answered by aviophage 7 · 1⤊ 0⤋
much less.
At sea level, the pressure on earth's surface is 14 pounds per square inch. In space it is zero. However, this is not enough to cause anyone to blow up if they suddenly experience a total vacuum. 14 pounds is not much pressure. The pressure at the bottom of the sea is measured in tons per square inch. Deep sea fish are as firm as any other fish at this pressure, but at the surface, their bodies become rather soft and gelatinous.
2007-07-31 08:52:49 · answer #4 · answered by Roger S 7 · 2⤊ 1⤋
The Gravity pressure on a mass depends on the energy content of the gravitational mass.
When talk about pressure on Earth we really think of it as the Pressure due to the Atmosphere.However outside the atmosphere there is no atmospheric pressure.
The higher you so up from the earth's surface the greater the atmospheric pressure attenuates and the less oxigen is present.
2007-07-31 08:52:20 · answer #5 · answered by goring 6 · 1⤊ 2⤋
It is a Vacuum, there is no pressure. That is why when one of the first few astronauts did a space walk, his suit blew up like a balloon and he couldn't get back inside. He let a little bit of pressure out of his space suit and gave himself the bends.
2007-07-31 08:49:28 · answer #6 · answered by Spacepirate 2 · 1⤊ 1⤋
Lower. In fact it is zero, or so microscopically small that it is practically zero. At sea level on Earth it is 14.7 pounds per square inch.
2007-07-31 09:19:00 · answer #7 · answered by campbelp2002 7 · 0⤊ 0⤋
lower, the farther you go away from earth the lower will be the pressure.
2007-07-31 08:50:49 · answer #8 · answered by tisoyen 2 · 0⤊ 2⤋
of course lower .almost ZERO
2007-07-31 09:58:47 · answer #9 · answered by viju 2 · 0⤊ 1⤋