On April 14, the US space command recently released a decrypted document confirming the research results of Harvard physicist Amir Siraj and natural science professor Abraham Loeb in 2019. They found the first known meteorite that collided with the earth and came from outside the solar system < p > < / P > < p > the meteorite was named cneos 2014-01-08, with a diameter of about 1.5 feet. It fell on the northeast coast of Papua New Guinea on January 8, 2014. Siraj and Loeb published their research in 2019 and claimed that the object was an extraterrestrial meteorite < p > at that time, Siraj was studying cigar shaped outer sky meteorites with Loeb ʻ Oumuamua, the first known extraterrestrial object in the solar system, was discovered in 2017. Silaj decided to search for other interstellar objects through the database of NASA's near earth object research center, and found what he thought was an extraterrestrial meteorite within a few days < p > the ultra-high speed trajectory is unique. It comes from outside the solar system < / P > < p > initially, the ultra-high speed of cneos 2014-01-08 attracted silaj's attention. The meteorite's speed is about 37.3 miles per second (60 kilometers per second), equivalent to 216 thousand kilometers per hour, far exceeding the flight speed of most meteorites in the solar system < p > Siraj also drew the orbit map of cneos 2014-01-08 and found it in an unconstrained orbit, which is very different from the closed orbit of other meteorites. The meteorite's rapid speed and flight trajectory finally showed that it did not orbit the sun like other meteorites, but came from outside the solar system < p > Siraj said: "it is speculated that cneos 2014-01-08 was produced by another star, and then kicked out of the star's planetary system. It happened to enter our solar system and collide with the earth." < p > Siraj and Loeb were never able to publish their findings in journals because their data came from NASA's cneos database. The database needs to abide by confidentiality regulations and will not disclose information such as whether the data is accurate or not < p > after years of efforts to obtain the required additional information, Siraj and Loeb finally received official confirmation from the US space command. Deputy commander John Shaw shared a memo on this topic on twitter, confirming that cneos 2014-01-08 is indeed an alien meteorite. The space command is a subsidiary of the US Department of defense, which is responsible for military operations in outer space < p > General Shaw wrote in his letter: "Dr. Joel Mozer, chief scientist of the space operations command, the service department of the U.S. space force under the U.S. space command, reviewed and analyzed more data obtained by the Department of defense related to this discovery, and confirmed that the data provided to NASA was very accurate enough to show the interstellar trajectory of cneos 2014-01-08." < / P > < p > the memo also said: "We have confirmed the research results of Harvard scientists in 2019, which makes cneos 2014-01-08 the first confirmed extraterrestrial meteorite in the solar system, three years earlier than the more widely known oumuamua. Because oumuamua moves too fast, it is considered impossible to originate from the solar system." < p > Siraj has now turned to other research, but he hopes to publish his initial research results. "I thought we would never know the true identity of the meteorite. Our attempts failed and were obviously stuck within the government, so I couldn't believe it when I saw the letter from the Ministry of defense with my own eyes," he said < p > in addition, silaj hopes to form a new team to try to recover some meteorite fragments that fell in the Pacific Ocean. But he admitted that the project is full of challenges and the possibility of success is not high. However, Siraj believes that if researchers can get extraterrestrial meteorite fragments, it will help scientists find more worlds outside the solar system < p > cneos 2014-01-08 is indeed small in size, but it also highlights the fact that our solar system may be full of objects from other galaxies. Neither NASA nor the US space command has responded for comment. (small) < / P > < p >