Arabia Weather - You may not be able to feel it, but the Earth is moving now, and just as the Earth has a gravitational force that keeps humans, animals, buildings, and other forms of matter on the Earth, so the Sun, which has a diameter of about 100 times the diameter of the Earth, exerts gravity on all the planets in our solar system, including The Earth is what makes us revolve around the sun in this way every year.
If the Earth changes its orbit, perhaps because the Sun somehow disappears or another larger object enters the solar system with stronger gravity, it would very likely mean the end of life as we know it.
Without any orbit, the Earth would likely collide directly with the Sun. This is because the Earth's path around that large, bright star in the sky is what prevents the Earth from being pulled directly by the sun's gravity. Imagine yourself throwing a tennis ball from the roof. The harder you throw it, the faster the ball will travel and the further it will travel before it falls to the ground. Our massive planet, whose dimensions resemble a tennis ball, moves around the sun at 18.5 miles per second (29.8 kilometers per second). It is constantly falling towards the sun, but too quickly to actually reach it. All of this would change quickly if the orbit stopped, causing the planet and everything on it to burn up as the planet got closer and closer to the sun.
A less dramatic shift in Earth's orbit would primarily affect the planet's temperature. The closer you are to the sun, the hotter the climate. Even a small step closer to the sun could have a big impact because rising temperatures would cause glaciers to melt, raising sea levels and flooding much of the planet. Without land to absorb some of the sun's heat, temperatures on Earth will continue to rise, and temperatures will also increase from rising levels of carbon dioxide and fumes that oceans release into the air.
Conversely, any change in orbit that pushes Earth away from the Sun would cool the planet and possibly freeze it. The oceans will be covered in ice, releasing less carbon dioxide and steam. It will also increase the length of years; The farther the Earth is from the Sun, the longer it takes to complete its annual orbit
This is in addition to the impact that changing the Earth's orbit will have on the rest of the solar system. Even a slight change in their path around the sun can cause planets to collide with each other. It could also disturb Earth's delicate balance with Jupiter. Jupiter, the largest of the eight planets, is considered a shield that blocks harmful gases and asteroids that may be on their way to Earth.
Read also
What if the Earth doubled in size?
What if the size of the sun was smaller than the size of the Earth?
What if trees disappeared from the earth?
Source: howstuffworks
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