Loud explosions were heard in the air

Meteors are not strange to us. After all, wishing on meteors is recognized as romantic all over the world, regardless of borders and cultures.

However, meteors usually occur at night. Have you ever seen a shooting star during the day?

People in Arkansas, Louisiana and Mississippi, in the United States, were hit by a meteor in broad daylight.

According to witnesses, the meteor was not only bright, but also extremely loud, and more importantly, it was traveling very fast.

So, is this a rare daytime meteor? Or was it sent by some so-called alien civilization to spy on Earth?

Fly bolide

A fiery red line streaked across the skies of three US states on April 29, 2022, causing people not only to see a bright ball of fire but also to hear a loud bang that shattered the sky.

NASA announced that it was a fireball.

Pyrometeor is a kind of meteor, generally refers to the burning body mass is relatively large, more than a few hundred grams.

And friction in the air generated a lot of heat, so intense combustion occurred, resulting in the brightness of the meteor is very bright, fire into the sky, hence the name "fire meteor".

However, some people have raised doubts about the concept of the "extraterrestrial", which reached a speed of 24,587 meters per second according to the calculation of the "extraterrestrial".

The speed of the third universe is 16.7 kilometers per second, and the speed of the fire is more than 20 kilometers per second, exceeding the speed of the third universe.

If a human probe travels at that speed, it won't be out of the solar system for more than 40 years. Can a meteor travel that fast?

That's not a big deal, since meteors have been studied to enter the atmosphere at speeds between 11 kilometers per second and 76 kilometers per second, so 24,587 meters per second is not surprising.

The fireball, which is about the size of a basketball and has a white-glowing tail, was first spotted above the Mississippi River before crashing into a marsh in Concordia Parish, Louisiana.

Due to the high temperature, the fireball broke up after coming into contact with water in the swamp.

NASA has concluded that it was a rocky object in space, perhaps from the asteroid belt, that somehow got out of its original orbit and became a rogue object.

As it passes by the Earth, it is attracted by the Earth's gravity, enters the atmosphere, and friction with the atmosphere generates heat, setting the whole celestial body on fire, which can be seen even in broad daylight.

Although the fireball did not cause any damage and no one was hurt, there was still a sharp intake of breath.

If it had flown slightly off course that day and landed in a city, it might have cratered the side of the road.

Visitors from outer space

Of the 190 craters that have been identified on Earth, the most famous is the one in Mexico's Yucatan Peninsula, which was responsible for the end of the dinosaur dynasty in the late Cretaceous.

About 66 million years ago, an asteroid, about 10 kilometers in diameter, collided with Earth, triggering the famous End-Cretaceous mass extinction, also known as the extinction of the dinosaurs.

Except that the disaster was triggered by extraterrestrials, when a comet collided with Earth about 12,900 years ago, triggering a global cooling that wiped out camels, sloths, woolly mammoths and other animals in North America.

The remains of these animals coincided with the occurrence of plants belonging to the Roseaceae family Dryas, hence the name Dryas events.

The fossils show that the extinction occurred twice, with the emergence of two layers, classified as the Old Dryas event and the younger Dryas event.

This cooling is global, because there are also remnants of Dryas on the eastern continental shelf of our country, which shows that extraterrestrials don't just throw a hole, they can also cause great disaster.

Scientists fear that an asteroid strike or Dryas event could happen again someday.

And extraterrestrial, it doesn't have to come from the solar system, it could come from outside the system.

In 2017, the telescope found a special object, it is neither from the asteroid belt, is not a comet, but an exoplanet, the home of unknown, only know that it entered the solar system from the direction of Lyra.

Scientists named it Oumuamua, which means "distant guest" in Hawaiian.

'Oumuamua didn't enter the Earth, but took a parabolic trajectory, moving closer to the sun and then away from it.

Oumuamua is the first extrasolar object to be discovered, but it won't be the last. It's not even ruled out that these exoplanets might harbor extraterrestrial life.

To be continued