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 Originally Posted by JKDS
Do individual pieces of tnt have gravity?
Do they have mass?
If you made a planet of tnt, would it have gravity?
Does it have mass?
If the planet then exploded, would the gravity (if any) change as the pieces exploded away from the center of the exploding tnt planet field?
Lets say that you were on the middle of an infinite frozen pond. For any direction you looked, there was ice to the horizon. As you moved one foot, it effortlessly slides and you fall down. It take's some coordinated effort to even stand. But you, having an idea, take off your clothes and bundle them up and throw them Thataway, and for your work, you move Thisaway. You see, the center of mass of you and your clothes has not moved, yet you and your clothes have.
You know how the Moon moves across the sky? Well, the Moon is bound to the Earth because of Earth's big fat gravity(mass). The Moon is caught falling to the Earth, yet it manages to never quite get there as it has found a balance between renegade movements and degenerative movement. And the Earth is falling into the Sun, it just has the spunk to dodge it for every moment.
About twice the distance of the Moon from the Earth, any object that might find themselves there is more under the influence of the Sun than it is the Earth. You see that for all her mass, the Earth just isn't as big as the Sun.
If the Moon moved faster, you see, it would be able to break from the Earth and fly free around the Sun. And if it moved faster still, it could break from the Sun and wander across the greater black plains of space.
Now, if the Moon simultaneously exploded because moon dust was basically TNT and the ignition was basically you shrugging your shoulders, some bits would move quickly away propelled by the explosion, propelled by the explosions beneath them, themselves propelled by their explosion and those below them, which are also propelled by the explosions beneath them... and it goes on.
What if some of those bits gained enough velocity to escape the Earth?
What if they were fast enough to escape the Sun?
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