WHAT IF THE SUN DISAPPEARED? - Space Science
777What if the earth stopped:
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What if the sun disappeared?
Hey guys this is Mike, what if the Sun just disappeared? Matter at the scale of the sun can’t really disappear which is great news. If the sun were to shrink into a black hole, most of what makes the sun important to us would be taken away, but ultimately in terms orbits nothing much would change. Though it would bring other problems with it.
We don’t know much about gravity, but what we do know is that gravity waves travel at the speed of light. This means that if the sun suddenly vanished, the planets would continue to orbit around where the sun used to be. Although the speed of light is really fast, the planets are really really far from the sun. At the same time the sun vanished from the sky, the sun’s gravitational pull would also vanish.
After the sun vanished all of the planets would progressively be let loose of their orbit and would travel tangent to their orbit in straight paths at a speed equal to the rate they are traveling around the sun multiplied by the distance they are away from it. It would take mercury 3.2 minutes before they saw the sun disappear, venus would take about 6 minutes, people on earth would see it in 8.3 minutes, the mars rover would witness it in 12.7 min, jupiter in 43.3 min, saturn 1.3 hours, uranus 2.7 hours, and neptune wouldn’t know the sun disappeared for 4.2 hours.
When the earth is let loose it would be traveling at about 30 km/s. That’s pretty quick, but there’s really no where to go. In a lot of ways, direction is more important than speed. It’s most likely the earth would be launched out into some dark portion of space, reaching the nearest star system in hundreds if not millions of years. The closest star system to the solar system is Alpha centari. Even traveling at 30 km/s, it would take over 42,000 years to get there. That seems like a long time to use today, but 42,000 years ago humans were already the most dominate species on the planet.
Unfortunately the planet would get very very cold, but not as fast as you’d think. In space, convection and conduction are not present. Therefore, because the planet is mostly molten rock and iron, the earth would take thousands and thousands of years to radiate its heat off. The surface would become too cold for people, but people are only really good at living in a narrow band of temperature ranges and to make it worse, people only live on the most minor edge of the planet where ice would form an further insulate the planet. Most life on the surface is solar powered and therefore would die, but with nuclear energy, it may be possible to generate enough heat energy to maintain pockets of life on the planet as well as power for lights, and other necessary electronics.
If the sun were to vanish, there would most definitely be ultimate chaos around the world. My question is, what would your solution for the survival of humans? Leave me your responses in the comments down below.
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