Gravity is defined in Physics this way:
"The force of gravity is the force with
which the earth, moon, or other massively large object attracts another
object towards itself. By definition, this is the weight of the object.
All objects upon earth experience a force of gravity that is directed
"downward" towards the center of the earth. The force of gravity on
earth is always equal to the weight of the object as found by the
equation:
Fgrav = m * g
where g = 9.8 N/kg (on Earth) and m = mass (in kg)"
(Gravity, Physics, class)
There is a problem with this definition:
"is the force with
which the earth, moon, or other massively large object attracts another
object towards itself"
Intuitively, we know this is not true.
We build a ball as large as we can build, put lots of things inside of it, even rocks, and nothing is attracted to it: we fall close to it, and our trajectory is not deviated to over it.
If we try to do that with a small object, the same happens.
Some then argue that that is because the earth is more massive, and therefore wins The Battle of Forces.
Some people associate gravity with something in the center of earth that pulls us to it (to the center of earth) as well.
Our imagination has already led us there, and we then made movies, such as The Core
We theorise that, if we could build vests or vehicles that could cope with the heat inside of the core, we would be able to cross it, and go to the other side.
What makes us be on the surface of earth is not a force that comes from the core of it...
Rather the contrary: The force that keeps us on the earth's surface, instead of floating or flying, comes from outside of it, from the layers of air around, that is, from the concentric circles of air around the earth.
Proofs are not missing: The moon is also massive, and we cannot stick to its surface in the same way we do here (Walking On The Moon). Why? Does it not have a core? Perhaps it is a cold one?
We normally would almost fly on the moon...
See:
"If they tried to take normal steps, they would fly up into the air to far and fall over – that did happen a few times."
This all is because there is no air around the moon or the air is way less dense there, and therefore the concentric circles cannot produce the same impact.
One detail then and this definition is OK, scientifically speaking: Gravity is a force created by the concentric layers of air over the objects, us included.
Were it in the sea, we would call this force ATM, which is the right thinking (Atmospheric Pressure).
Perhaps we have to adapt things to explain all, but it has to be true that the core attracts nothing itself.
Because of the solid material forming earth, we are stopped from falling.
If the earth did not exist, we would fall...
On the other hand, take the core out of earth.
We think we are sure that we would still be standing on the planet, so that the core is not what keeps us on its surface, full stop.
Our top space scientists, from NASA, seem to be saying, on Air On The Moon, that the amount of atmosphere around the moon is equivalent to vacuum for us, like on earth.
Upon reading their article, we notice that they mention that, as for what they currently know, there is no Oxygen and Hydrogen in the moon's atmosphere.
In the same article, however, they talk about drops of water. Oh, well, whoever is OK in Chemistry would know that, in the same way we need a man and a woman (so far) to generate a human, we need both Hydrogen and Oxygen to generate any amount of water, so... .
Trivially, it cannot be the case that we have terraquean vacuum around the moon.
This way, our suggestion seems to be winning (so far).
Inspiration: Apples and Newton
___________________________________________________
Please help us keep on inspiring you by acquiring one of our online courses:
___________________________________________________
Please help us keep on inspiring you by acquiring one of our online courses:
