They say there is no PERFECT vacuum, doesn't that suggest friction in space?

Question

If there is no perfect vacuum (not even space), then what material fabric is space made out of? Also, something thrown into space will definitely come to a halt some day (maybe thousands of years after) due to friction between the object thrown and the fabric of space!

Answer 1

they are right: there is no perfect vacuum and that does not always suggest that are friction in space. In modern physics matter and energy are related by Einstein's equation: E = mc². If you have photons with the appropriate energy, matter and antimatter can be formed. Then the perfect vacuum is some place where there is not matter nor energy; and until now nobody has discover a place without energy

Answer 2

Yes. You just answered your own question there.

"Also, something thrown into space will definitely come to a halt some day (maybe thousands of years after) due to friction between the object thrown and the fabric of space!"

There is your answer. You just wasted 5 of your points, haha.

Answer 3

Dark matter in space does not influence anything: we can't (yet) detect it. But it is true that there are few atoms moving around, an average of 1 atom per cubic feet. That's not a lot. Most of these atoms are hydrogen and helium, but you can find all the other atoms as well, comming from very old exploded stars (just star-dust, litterally).
So, yes, it will "slow down" objects moving in space, but like a marble will slow down an express train!!!

Answer 4

When they we that there is no perfect vacuum, we mean that there exists energy (or radiation) in space and that's what makes it non-complete vacuum. But when it comes to friction, we must say, matter. Friction is only related to matter, not radiation. I've never heard "Captain, the friction caused the spaceship to burn, we need to get back to Earth!".

Hope that helped!

Answer 5

Furthermore, the motion of this object is more likely to be influenced by the gravitational fields of the stars and planets it's passing. What are the chances the object will pass completely through the universe without colliding with a major celectial body?

Answer 6

area isn't a acceptable vacuum. Even without talking about unique outcomes like the quantum description of the vacuum with digital debris popping out and in of existence, there are atoms and molecules floating round available, some in preserving with cubic meter. regularly it is hydrogen, the most major component in the universe. yet there are more effective complicated issues available too, even some undemanding organic and organic molecules. i do not recognize what you recommend by technique of holding that the speed of light is both consistent and infinite. it is no longer infinite. It takes time to bypass places. It takes minutes to get from right here to the solar, and hours to get to the outer planets. Years to get to different stars. The difficulty on the speed of light appears to be like a difficulty of the universe itself. there is not any reason to imagine that it truly is led to by technique of remember.

Answer 7

Yes, you are correct.
There is no PERFECT vacuum.
In space, the friction is neglible because there are just scatter atoms and molecules which are very very far apart. Like dropping 10 golf balls into the pacific ocean.

Answer 8

" Perfect " is the key term here..
Open space does not appear to be a "Perfect" vacuum though
there are so few and so small objects or "imperfections" that for
the purposes of space travel they appear to be irrelevant...

Answer 9

While it is true that space is not a perfect vacuum, an object moving through space is much more likely to have its motion stopped due to a collision with a large body, rather than due to slowing down because of friction.
The particle density of intergalactic space is less than one hydrogen atom per cubic meter. To be generous, and for the sake of simplicity, let us say that the density is in fact exactly one hydrogen atom every cubic meter. Let us suppose that our object flying through space is a one-cubic-meter block of ice, weighing roughly 1,000 kilograms. Now let us suppose that every hydrogen atom in intergalactic space is perfectly still, while our block of ice travels with an initial speed of 2000 m/s. Finally, let us assume that all collisions with the ice are completely inelastic; that is all of the hydrogen atoms that the ice hits stick to its surface. [These assumptions provide an oversimplified version of reality, but the end result should still make my point to within one degree of magnitude.] Due to conservation of momentum, the total mass of the ice block and the hydrogen atoms it has hit, times their common velocity, should remain constant at 2 million kg-m/s. Thus, after the ice block has slowed to half its initial velocity, or 1000 m/s, it would need to have encountered one metric ton of hydrogen atoms. How many atoms is this? Well, considering one mole of hydrogen atoms (roughly 6x10^23) weighs one gram, and one metric ton is equal to one million grams, our ice block would have had to encounter 6x10^29 hydrogen atoms. Since our ice block is one cubic meter, it would encounter a hydrogen atom for every meter it travels. Therefore, to have been slowed down by half its velocity, our ice block would have to have traveled 6x10^29 meters, or roughly 6x10^13 light-years. This distance is several hundred times greater than the width of the known universe.
And remember, that is only to reduce the speed by half. To come to a complete stop by hitting stationary particles, our ice block would theoretically have to hit an infinite number of particles, and thus travel an infinite distance.

Answer 10

yes there is friction in space. friction in space is due to the unexplored matter called DARK MATTER .
but friction due to this so small that it does not effect motion effectivelly