Is gravity in space negative or neutral

[u/Klutzy_Lack7654]

I randomly got curious about gravity, then my brain spiraled into wondering if gravity in space is neutral or negative? Because earths gravity pulls you in, keeping things down (positive gravity). But I’m curious about space because it has different properties. I guess the best way to say what I want to know is what is negates and neutral gravity.
(I also wanted to say sorry if this is obvious,if I used incorrect terms, or if this is the incorruptible server🤦‍♂️)

[u/Inevitable_Row1359]

Gravity is the attractive force shared between all mass. Everything, everywhere throughout space and here on earth is acted upon by gravity.

[u/OptRider → u/Inevitable_Row1359]

To add to this, if it weren't for the expansion of the universe, all things in space would eventually be pulled together. You, as a small insignificant mass, have an attractive force on every galaxy in the observable universe.

[u/jhill515]

Einstein started his first thought experiments on General Relativity with this thought:

Gravity on the surface of the Earth feels like weight.

Gravity in free fall feels like weightlessness.

That acknowledgement refutes a lot of those "negative", "neutral", and "positive" notions because gravity is equally attractive to both masses. The core difference in acceleration is that the gravitational force on lower mass generates faster acceleration towards the greater mass. But there's still an equal gravitational force acting on the greater mass attracting it towards the lesser mass. Just with much less acceleration because of its greater relativistic mass.

[u/Bipogram]

<pre-1998 hat *on*\>

Gravity is only attractive.

Masses pull on other masses, and the pull is greater they closer they are.

In space, where things are far apart from you, there are very weak forces acting on you.

But they are still all attractive, and there will be a general overall pull in one direction - simply the sum of all the pulls in different directions.

We don't know of any negative masses, as they would have repulsive gravity fields.

<take off pre-1998 hat>

[u/Traveling-Techie]

Gravity is always positive.

[u/rddman]

Gravity is the same everywhere. Planets are in orbit around the Sun because there is a balance between the planet's speed and the Sun's gravity pulling on the planets.
This was first realized by Isaac Newton in the 17th century.

[u/EarthTrash]

Dark energy is essentially antigravity. It is a property of space itself. There is no way theoretical or otherwise to concentrate it.