It is unclear why gravity exists, but it is associated with matter and mass. The more massive an object, the greater the gravitational force it exerts. From the general theory or relativity, time is slowed by mass and the path of a particle in the vicinity of a mass is curved in an attempt to go in a straight line in curved space time. If this statment is correct then gravity was created in the big bang when quarks combined to form particles with mass. There is one worrying aspect to this simple picture, Light has no mass only energy, according to Einstien's E=MC2 mass and energy are related but then it is implied that gravity acts on energy. The energy of a particle is a function of its wavelength, its wavelength and spin being a function of time. I believe that ultimately gravity comes from the combined spin of all the particles that go to make up the mass in question. Unfortunately this is just metaphysics as it is not possible to test. Gravity is a characteristic of all mass, and it is not yet clear what the nature of gravity really is. It is possibe that it is related to the as yet undiscovered Higgs Boson. When we develop a "theory of everything", it will give us a picture of gravity that can be explained in Quantum terms, and this will be a huge step forward. The problem of gravity acting on light is actually addressed above. Light bending as a result of gravity can be seen not as a 'force' acting on massless photons, but as light passing through space that is itself warped. Light follows what is for it the straightest path through space.
Gravity has been around as long as there has been mass. They come together; you can't separate them.
Nothing, gravity affects everything in the universe every yocto-second. You cant come up with a non example. Even anti-gravity is an example of gravity since your just reversing the pull of gravity to a push.
Gravity affects the bounce of a basketball because if there is gravity, the basketball will come back down after it bounces. But if there is no gravity, the basketball will bounce and travel indefinitely upwards and never come back down until a gravitational force pulls the basketball towards it.
No matter what happens what goes up must come down. For example if you jump up into the air you have to come down because of the force of gravity. Same for space travel. If you jump on the moon you must come down.
Objects that go up always come down due to gravity, which is the force that brings objects back towards the Earth's surface. When something is thrown upwards, gravity acts as a constant force pulling it back down until it reaches the ground. This phenomenon is known as projectile motion.
You come up, you come down.
Its mass
The gravity that keeps the planets in orbit is the sun's gravity, which is a product of the sun's mass.
gravity
gravity
The force is gravity.
the mass of the earth exerts gravity on all objects around it
The blade of a gravity knife is contained within the handle of the knife. It requires a spinning motion or gravity for the blade to come out of the handle.
gravity
gravity and mass...
it came out in 2008
Gravity