The Yingxian Meteor Rain will usher in great!Do you really know it?

Science Fiction Network August 11 (Wang Xiuxia) According to an expert on astronomical science popularization, the Yingxian Meteor Shower will usher in the early morning of August 13 this year. Observation is the most appropriate from the night of the 12th to the early morning of the 13th, and the over -hour sky traffic is expected to reach about 100. Meteor shower, like the elves of the night sky, has always carried people's longing for the beautiful world. How much do you know about Yingxian Meteor Shower?

What is Yingxian's meteor shower?

The Yingxian Meteor Shower (scientific name Perseids) is a meteor shower that appears as a radiation point near the Yingxian γ star, also known as the Yingxian γ meteor shower. Each year from July 20th to August 20th, it reaches a climax on August 13. It is called the three major meteor shower in the northern hemisphere with the meteor shower and Gemini meteor shower with the quadrant.

The Yingxian Meteor Meteor has a large number of rains, and it will appear in a fixed time almost every year. It is the most active and most commonly observed meteor shower. For non -professional meteor observer, it is a good ornamental experience that cannot be missed at a time.

According to reports, the meteor of the Yingxian meteor group is faster, up to 59 km/s, and it belongs to the high -speed meteor group. The time for meteors to pass the night sky is only a few seconds, and some of the brighter meteors will leave a few seconds after flashes.

How is the Yingxian Meteor Shower formed?

The cause of the Meteor Shower in the Yingxian is related to the comet. Comet is a sphere consisting of ice cubes and sandstones. When it is close to the sun, the comet will sublimate the surface material due to the heat of the sun. These sublimated substances are the meteors in the future. In the operation of the comet around the sun, some meteor experience and comet separation are separated from the track of the comet. The meteor body will continue to spread, stay away from each other due to solar pressure and the force of the planet, and gradually increase the range.

When the running orbit of the earth intersects with the comet track, the meteor body is affected by the earth's inhalation power, and it will break into the earth's atmosphere and burn. The flames produced during burning are the meteor shower that people see. If there are many meteor bodies scattered on the track of the comet, it is often seen that the meteor shower caused by the comet can still be seen in the years after the comet returns.

It is worth noting that the "mother" of the Yingxian meteor shower is a comet named 109P/Swift Tart. The regression cycle of this comet is about 130 years.

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