Chinanews.com, Jinhua, December 17th (Dong Yixin, Chen Hao) On the evening of the 15th, citizens in many places in Zhejiang observed a fire meteor. Some fragments of this meteor that burned and emitted a strong light fell on Tanxi, Pujiang County, Jinhua City, the province. Town, were picked up by the villagers of Chengtou, Siqian and Maodian villages respectively.
"There is a very obvious gas imprint, which can only be found when passing through the atmosphere, and it is also an obvious feature of meteorites." On the 16th, Zheng Yongchun, deputy director of the Space Science Communication Expert Studio of the China Space Science Association and a science popularization expert, rushed to the scene after hearing the news. After observing the stones picked up by Chen Genhua, a villager in Pujiang County, he said.
The staff of the radiation detection room of the Jinhua Ecological Environment Monitoring Center conducted Xr (gamma) radiation dose detection and nuclide screening on suspected meteorites.
Photo courtesy of Pujiang County Financial Media Center
According to Zheng Yongchun's analysis, this heavy stone is suspected to be a chondrite, which is relatively common.
However, the probability of seeing the trajectory and picking up the meteorite is very low, so the scientific value of this stone is very high.
After checking the two impact craters in Chengtou Village and Maodian Village, experts deduced that the suspected meteorite hit the ground at a speed of 100 meters per second, 10 times faster than the impact speed of raindrops, similar to the speed of a high-speed rail, with an energy of 10,000 joules It is equivalent to the energy of 1 gram of explosive explosion, so the public can hear the sound similar to setting off firecrackers.
On the afternoon of the 16th, the staff of the radiation detection room of the Jinhua Ecological Environment Monitoring Center conducted Xr (gamma) radiation dose detection and nuclide screening on suspected meteorites.
"The item we measured is Xr (gamma) radiation dose rate. The value measured next to the stone is about 190, which is not much different from the environmental background. It is a little higher, and it can be basically determined that the radiation of the stone is very small." Jin Hua Rao Penghui, an engineer in the radiation detection room of the Municipal Ecological Environment Monitoring Center, said.
A suspected meteorite picked up by villagers in Pujiang, Zhejiang.
Photo courtesy of Pujiang County Financial Media Center
"A meteorite is a living fossil for studying the earliest history of the earth. It is basically the same age as the earth, 4.6 billion years old." Zheng Yongchun said.
"After we got the news, we immediately arranged town and village cadres to check on the scene that night to maintain order." The relevant person in charge of Tanxi Town told reporters that the corresponding town and village cadres visited three villagers who picked up suspected meteorites. Tell them to take good care of the stone.
"It cannot be sold or transferred to others without permission. If the relevant departments want to conduct relevant appraisals on this stone, they must cooperate with relevant work."
According to the provisions of Article 250 of the "Civil Code", if it is a suspected meteorite with important scientific research value, it belongs to the category of natural resources and should belong to the state.
If there is no scientific research value, then the three suspected meteorites can be subject to the pre-occupancy principle of the Civil Code and be owned by the person who found them.
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