Gravity in vacuum

[blackeyed]

Is there gravity in vacuum?

[bibblebub]

yes

[ChuckFickens]

Yes, it would make the earth orbiting the sun a bit of a problem otherwise!

[dickythecook]

Lots of dust and spiders in ours!!!

[jake-the-peg]

er depends what you mean

If you mean can gravity travel through a vacuum yes, obviously space is a vacuum ( by most conventional senses ) and the moon is held in orbit around the Earth by Gravity.

But of course you need matter to create gravity in the first place and if you have matter it's not a vacuum

If you imagine a Universe without matter - a perfect vacuum then there's no gravity

Rather depends where you're drawing lines

[blackeyed]

so, alright, there is no gravity in a vacuum as it doesn't have any mass.
but
if u take an empty plastic(disposable) bottle n pump the air out the gets crumpled , from this i can conclude that as air goes out of the bottle the walls of the bottle crush in to replace air. alright there too
but
the same doesnt happen when u create vacuum inside a bell jar ,i.e. the glass doesnt crush in, as the glass is thicker or denser( or something else, i dont know the correct scientific term)
so, it seems like the vacuum does pull in but only upto some extent
or, alternatively, i can ask y does the plastic bottle walls rush in but the glass doesnt?

[blackeyed]

the wall* gets crumpled

[bibblebub]

The plastic bottle crumples because of the pressure of the air around the bottle and the plastic is not strong enough to withstand that. Nothing to do with gravity.

[Old_Geezer]

Can you have a universe with space but no matter ?
I suspect not.

Vacuums do not pull in, the air outside crushes down.
Some containers can stand the pressure, others collapse.

[ChuckFickens]

Just because I'me curious here, how old are you BK?

[vascop]

From BE's reply it seems to me that without meaning to we have confused BE even more.
The question is too vague to start with.

[beso]

bibblebub //The plastic bottle crumples because of the pressure of the air around the bottle and the plastic is not strong enough to withstand that. Nothing to do with gravity.//

Oh yes it is. Without gravity there would be no air pressure on the outside. The crushing is done using gravitational potential energy.

[mibn2cweus]

//Just because I'me curious here, how old are you BK?//

Sheesh, Chuck! . . . well, at least you didn't ask if she was a blonde?

[bibblebub]

beso - ok, but my reading of the OP's postings is that she thinks that gravity has a direct effect on the bottle rather than indirectly via the air pressure, and so I just added that comment in what I perceived to be the same sense as what had already been posted.

[blackeyed]

Thank you guys am all clear now, and actually i posted an answer 10 days ago but somehow its not here.
but thanks for the help!
@chuckfickens am 20.

[mibn2cweus]

//@chuckfickens am 20.//

Yeah, but what colour is your . . . D'oh!

Erm, nevermind . . .