The Perseid meteor shower is coming, its main body is still approaching the Earth, will crash into the Earth in thousands of years

The start of autumn has passed in an instant.​

While the temperature doesn't seem to be cooling down, the night sky is already getting something new, like the Perseid meteor shower, which typically takes place from July 20 to August 20 and peaks on August 13.

As and quadrant, the geminids meteor shower and called it in three large meteor showers in the northern hemisphere, almost never absent in the starry sky in the summer, but this year the Perseid meteor shower is destined to dull, because on August 12, just is the lunar July 15, under the condition of the clear night sky full moon light will cover a number of the glory of the meteor shower.

So it's likely that only about a fifth of the bright meteors will be visible during this year's Perseid meteor shower, which will peak on the morning of August 13, and we won't be able to witness it during the day 39bet-xì dách-phỏm miền bắc-tiến lên miền bắc-xóc đĩa-game bắn cá.

Although popular science says that meteor showers are small comets that do not pose a threat to the Earth or human civilization, few people realize that the main part of the Perseid meteor shower is still on the way to the Earth, and the meteor shower we see so far is only a small follower of the comet, which is nearly 30 kilometers in diameter.

And swift as the main body of the Perseid meteor shower - Tuttle comet, always within the period of revolution in a constantly close to the earth and the moon, super computer simulation shows that it will arrive in 3044, 1.61 million kilometers from earth. The future does not rule out the possibility that it will collide with the earth or moon, but even after the collision is thousands of years.

42f4357124e0e74968f3eee05c10dc74The Perseid meteor shower, or any other meteor shower, is essentially an astronomical event that occurs when massive comets sweep past the Earth with their tiny siblings.

In addition to the meteor shower, Earth's neighborhood sometimes receives some unexpected visitors, such as the same number of asteroids that are difficult to fully monitor.

There was a fireball in Chelyabinsk, Russia, in 2013. Although the monitoring showed that it had broken up in the air, it was still powerful, shattering windows for several kilometers around before plunging into a frozen lake. If it had hit the city center, it would have done more damage.

Although the solar system is 4.6 billion years old and its orbit is supposed to be clear, a large number of asteroids and comets still exist in the solar system, but more regularly, thanks to the asteroid belt between Mars and Jupiter and the Kuiper belt beyond Pluto's orbit.

But that's no guarantee that they won't mess around.​

Astronomy estimates that in addition to the millions of asteroids in the asteroid belt, there are still a large number of undetected asteroids in the solar system near Earth and beyond, as evidenced by the frequent occurrence of meteors and fireballs in the Earth's night sky, and the occasional meteorite attack.

So one of the major tasks of the astronomy community for a long time has been to build near-Earth asteroid detection systems, and in the future, to develop near-Earth asteroid defense systems, to use rockets to deflate asteroids, or to launch warheads to destroy asteroids, or whatever it takes to keep asteroids away from Earth.

However, many people believe that defending against asteroids is not necessary, because humans, although living on Earth now, will not be able to live on Earth forever. In the foreseeable future, humans will leave Earth for other planets, even the galaxy, and at the worst, the moon and Mars.

But will humans really colonize other planets on a large scale?

There is no exact answer to this question, because while the 7 billion people on Earth seem to be spread across every continent, the real inhabited area is only a tiny fraction of the earth's surface area, and there will be a lot of habitable and developable areas in the future.

And compared with the harsh environment of the moon and Mars, and the modification cycle of thousands of years, the Earth's environment is undoubtedly better, at least with unlimited oxygen.

With Earth far less difficult to exploit than other planets to transform, there would be no need for large-scale colonization of the moon or Mars, just a few small towns there. The vast majority of human civilization would remain on Earth, so it would be necessary to defend against asteroid attacks.