RE: Cosmology: The Strange and Wonderful World of Gravity

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It is the force that makes things go up

Ok, I'm confused here, how does it make objects go up ?

He explained that gravity is a force that pulls objects together.

What about Robert Hooke ?

the Earth would eventually be pulled apart by the Sun's gravity

I would love to know what inspired this speculation.



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Ok, I'm confused here, how does it make objects go up ?

It's a pretty simple concept, really. Gravity is the force that pulls things towards the center of the Earth. The closer you are to the center of the Earth, the stronger the force of gravity is.

Things like airplanes and rockets use this force to their advantage. They use their engines to create a lot of thrust, which pushes them up into the sky. Then, once they're high enough, they can coast for a while because the force of gravity isn't as strong.

I would love to know what inspired this speculation.

If not for gravity, the Earth would eventually be pulled apart by the Sun's gravity. The Sun is constantly exerting a force on the Earth, and without gravity, the Earth would eventually be pulled apart. This is because gravity is the force that keeps the Earth in orbit around the Sun. The Sun's gravity is what keeps the Earth from flying off into space.

What about Robert Hooke ?

In the mid-1600s, an English scientist named Robert Hooke discovered that objects fall at the same rate, regardless of their mass. He also found that the farther an object falls, the faster it falls. From these observations, Hooke concluded that there must be a force that pulls objects toward the center of the Earth. He called this force "gravity."

Today, we know that Hooke was right about gravity. It is the force that keeps us on the ground and makes things fall. It is also the force that makes it possible for us to orbit the Sun and the planets to orbit around the Sun. Without gravity, the Universe would be a very different place!

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