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What is the role of gravity in our solar system, galaxy, uni

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Bailey Bansbach

on 7 November 2014

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Transcript of What is the role of gravity in our solar system, galaxy, uni

What is the role of gravity in our solar system, galaxy, universe?

Gravity is the powerful force that glues our universe together. Gravity helped form our solar system, the planets, and the stars. Without gravity none of
us would exist and there would be no stars, planets,or even molecules.
Does it work everywhere?

Gravity has been around since the very beginning of the universe, and it works the same way everywhere in the universe, on all kinds of different objects, of all different sizes (larger than atoms - those are held together by atomic forces instead).
How does it work in our solar system? galaxy? universe?


Gravity is the powerful force that glues our universe together. Gravity helped form our solar system, the planets, and the stars. It holds the planets in orbit around the Sun, and moons in orbit around the planets. The gravitational pull of the Sun and Moon creates the tides on Earth. Far beyond our solar system, the irresistible force of gravity is collapsing stellar cores into amazing - and bizarre - objects in our universe--neutron stars and black holes.
Why does it work?
Why do I need to learn about gravity?

I think that we need to learn about gravity because it is a common question that people need answered.
Because it was discovered for a reason.
GRavity
It works because of particles called gravitons. We also know that what goes up must come down. Perhaps someday, we'll know exactly why. But until then, we can be satisfied just knowing that planet Earth won't go hurdling into the sun anytime soon. Gravity is keeping it safely in orbit.
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