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science.howstuffworks.com/environmental/earth/geophysics/question232.htm

Every time you jump, you experience gravity. It pulls you back down to the ground. Without gravity, you'd float off into the atmosphere -- along with all of the other matter on Earth. You see gravity at work any time you drop a book, step on a scale or toss a ball up into the air. It's such a ...

www.spaceplace.nasa.gov/what-is-gravity

The answer is gravity: an invisible force that pulls objects toward each other. Earth's gravity is what keeps you on the ground and what makes things fall. An animation of gravity at work. Albert Einstein described gravity as a curve in space that wraps around an object—such as a star or a planet.

earthhow.com/how-gravity-works

Gravity is always at work on Earth. Gravity is the constructor of our planet 4.6 billion years ago. Depending where you are on Earth, gravity varies. For example, gravity is 9.764 m/s 2 in Peru and 9.834 m/s 2 in the Arctic. This is because mass (like mountains) and the bulge at the equator amplifies it.

www.universetoday.com/75705/where-does-gravity-come-from

To them, gravity is one of the mysteries to be solved in order to get a complete understanding of how the Universe works. So, what is gravity and where does it come from? To be honest, we’re not ...

en.wikipedia.org/wiki/Gravity

Gravity (from Latin gravitas, meaning 'weight'), or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light —are brought toward (or gravitate toward) one another. On Earth, gravity gives weight to physical objects, and the Moon's gravity causes the ocean tides.

Humans could successfully colonize and live on planets with up to 3 times the gravity of Earth. At 4 times the gravity, however, blood flow to the brain would be impaired Earth's gravitational ...

www.physics4kids.com/files/motion_gravity.html

Gravity or gravitational forces are forces of attraction. We're not talking about finding someone really cute and adorable. It's like the Earth pulling on you and keeping you on the ground. That pull is gravity at work. Every object in the universe that has mass exerts a gravitational pull, or force, on every other mass. The size of the pull ...

plus.maths.org/content/how-does-gravity-work

Gravity according to Newton "According to Newton's relatively simply picture, gravity is a force that works between two objects," says Sathyaprakash. "So if you have the Earth and the Sun, for example, then the Earth feels a force that is exerted by the Sun, and in turn the Sun feels the same force, exerted by the Earth."

science.howstuffworks.com/environmental/earth/geophysics/question2321.htm

When you step on a scale, the scale reads how much gravity is acting on your body. The formula to determine weight is [source: Kurtus]: weight = m * g. where m is an object's mass, and g is the acceleration due to gravity. Acceleration due to gravity on Earth, is 9.8 m/s² -- it never changes, regardless of an object's mass.

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