So why are we pulled down rather than pushed up by this fundamental force?
A four-dimensional network
Gravity is modeled described by scientist Albert Einstein’s general theory of relativity based on his profound understanding of space-time, an invisible network that surrounds our universe.
To visualize the idea To use this complex idea, imagine space-time as a four-dimensional entity that combines the three dimensions of space (length, width and height) with the fourth dimension of time.
Einstein revolutionized the our understanding of gravity by showing that massive objects such as Earth not only attract other objects towards themselves as previously thought but also warp spacetime to a large extent. around them.
Matter creates a “well of gravity”
To simplify this idea imagine yourself standing in front of a trampoline xo. If you place a block like a ball in the middle of a trampoline it will create a deformation around this called a “gravity well.
If you place a second smaller ball on the trampoline it will naturally roll towards the larger ball in the middle. This two-dimensional analogy reflects how mass distorts space-time by creating gravitational forces.
The more massive an object is, the more pronounced the curvature of space-time is. obvious. For example, the Sun creates a greater curvature than the Earth due to its greater mass.
Therefore the planet Ours is not drawn towards its geometric center but towards the bottom of the “gravitational well” caused by its presence in space-time.
At Why doesn’t the Earth roll towards the Sun?
Our planet does not roll towards the Sun thanks to the delicate balance between the gravitational force from the fireball and the speed of the Earth. Earth’s rotation around it.
This is like a kind of delicate dance between the gravitational force pulling the Earth toward the Sun and the centrifugal force created by the Earth’s orbital motion .
Indeed, the Earth is constantly falling towards the Sun due to gravity, but its orbital speed allows the planet to maintain an equilibrium preventing it from rolling directly towards the Sun. < /p>
This combination of gravity and orbital velocity creates a steady orbital motion that keeps the Earth in orbit around the Sun. The same thing happens between the Earth and the Moon .
Thus general relativity offers a unified explanation of gravity by linking mass, energy, and the shape of space-time.
This revolutionary perspective allows us to understand why objects in the universe are attracted to each other and provides insight into how physical reality works on a scale. cosmic tissue.
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