NASA’s prediction about the end of humankind is that an asteroid might hit planet Earth. One of the ways humanity could vanish is in the hands of the Universe — The physical Universe, the outer space that surrounds Earth. It looks like there is a chance that an asteroid would end life on Earth as we know it. Ten big enough asteroids could and might collide with our planet in the next centuries.
The asteroid needs to be at least one kilometer wide. That sounds like a little threat, as the impact could destroy no more than a city. But the extinction of dinosaurs, 66 million years ago, taught us that it is not the impact, per se, that destroy life on Earth, but the consequences over time. The impact with an asteroid back in the prehistorical era created a vast cloud that prevented the Sun to sustain life. Without warmth and light, biological life couldn’t survive.
The Earth Is Only Centuries Away From A Possible Collision With A Deadly Asteroid
The same scenario is expected to occur when and if the astronomical event would repeat. It seems that the alleged future asteroid would more likely hit the water. About 70% more likely. If we fall under the less likely possibility, it is a 20% probability that a huge space rock would fall into an unpopulated area. Also, it is believed that the particular asteroid, which wiped out the dinosaurs, was up to 16 kilometers wide.
So, as the chances are, even if the scenario NASA came up with is not just a possibility but also a probability, humanity would survive. Or, maybe that’s just the naive optimism talking. The man needs to know what the end of days would be because understanding is the humans’ way not to be afraid anymore. But we are several centuries away from knowing that. At this point, astronomy looks like flirting a little bit with astrology. Only future generations will tell.