Mars acts as a slingshot and hurtles the asteroids towards Earth. Of course, for us on Earth, the consequences would be pretty dire. Length of Day The length of a year doesn’t change since Earth still rotates around the sun, however if Earth ceased to spin, each day and night would last six months. That’s well before the sun is expected to swell into a red giant and consume us in its death throes roughly 5.4 billion years from now. The Sun, exerting its huge gravity on this anomaly, pulls the asteroid towards it. Here, Mars’ gravity comes into play. Even though these asteroids may fly by with several million miles to spare, Mars does increase the probability of Earth-bound asteroids. If the Earth stopped spinning suddenly, the atmosphere would still be in motion with the Earth's original 1100 mile per hour rotation speed at the equator. This means rocks, topsoil, trees, buildings, your pet dog, and so on, would be swept away into the atmosphere. The Earth is traveling around the Sun with an orbital velocity of 30 kilometers per second.This is exactly the speed it needs to be going to counteract the force of gravity from the Sun pulling it inward. However, if Earth stopped spinning gradually, what it accomplishes in a single day might eventually take a year to complete; countries on the side facing the sun would experience daylight for 6 months, while those living on the side facing away from the sun would experience a six-month night. If you’re any given distance away from a conglomeration of matter, it doesn’t make much difference how that matter is arranged. The lack of atmosphere would chill the Earth's surface. For starters, Earth would now take a whole year to do what it pulls off in a day: cycle from night to day and back. For example, if the Sun were to collapse into a black hole (), all of the planets would continue to orbit around it in exactly the same way (just colder). When a Mars-size object collided with Earth 4.5 billion years ago, it knocked off a chunk that would become the moon. Also, as light from the Sun takes eight and a half minutes to reach us, we’d have a final few moments of glorious sunshine before our planet was bathed in darkness. Eventually (long after surface life had died), solar radiation would break atmospheric water into oxygen, which would react with carbon on the Earth to form carbon dioxide. An image from Nasa's Solar Dynamics Observatory (SDO) shows a 200,000 mile long solar filament ripping through the Sun's corona in September 2013 Nasa For … The air would still be too thin to breathe. All of the land masses would be scoured clean of anything not attached to bedrock. If the Earth stopped spinning, the magnetic field would disappear leaving us unprotected against the Sun’s harmful ultraviolet radiation and deadly solarwinds. On the plus side, our planet retains heat rather well, so we wouldn’t freeze to death instantly.

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