Friday, September 30, 2022

Astronomers search for interstellar meteorites using large magnets, for what? Page All

Nation World News – A group of astronomers say they are preparing to fish for a small meteorite from another star system that once hit the Pacific Ocean. They are trying to find an interstellar meteorite using large magnets.

The meteorite once struck Earth with an energy equivalent to about 121 tons (110 metric tons) of TNT.

Therefore, a team from Harvard University plans to find this piece of interstellar meteorite known as CNEOS 2014-01-08.

According to a study published in a pre-printed journal arXiv In July 2022, CNEOS 2014-01-08 hit Earth for the first time on 8 January 2014.

“Finding such a fragment would represent mankind’s first contact with material larger than dust in the outer solar system,” said study author Amir Siraj, a Harvard University astrophysicist.

reported from live scienceWednesday (10/8/2022) Siraj identified the origin of interstellar objects in a 2019 study.

However, he only confirmed the findings of the US Space Command in May 2022. He said there were no witnesses related to the object, namely an interstellar meteorite that struck Earth.

“It (the meteorite) hit the atmosphere at midnight about a hundred miles (160 kilometers) off the coast of Papua New Guinea, containing about 1 percent of the energy of the Hiroshima (nuclear) bomb,” Siraj said.

meteorite search project

The project, called Galileo, by Siraj and Harvard astrophysicist Avi Loeb, is a $1.6 million campaign to bring down similar-sized magnets. King bed, With a direction of 1.3 degrees south, 147.6 degrees east.

This is where the United States Department of Defense meteorite is located.

“CNEOS 2014-01-08 far exceeds the strength of normal iron meteorite material, which should make it easier to recover,” Siraj said.

The strength of the material in these interstellar meteorites refers to how easily something can withstand deformation or damage from a load.

Illustration of a comet falling to Earth.  13,000 years ago, the fragment of a large comet caused a firestorm and swept across planet Earth, triggering an ice age.Shutterstock/Shutterstock/Marco Aliaksandra Illustration of a comet falling to Earth. 13,000 years ago, the fragment of a large comet caused a firestorm and swept across planet Earth, triggering an ice age.

“Most meteorites have enough iron that they will cling to the kind of magnets we plan to use for ocean missions,” Siraj said.

“Given the very high strength of the material, it is very likely that the 2014-01-08 CNEOS fragment is ferromagnetic,” he continued.

Departing from Papua New Guinea, the Project Galileo ship will use a magnetic sled on a long-line winch, which will be carried over 1.7 km to the seafloor for 10 days. It is hoped that magnets can retrieve tiny fragments of the meteorite, measuring as small as 0.004 inches.

However, it is not clear when the astronomers will be able to carry out their mission. Siraj said an alternative way to study interstellar objects at close range is to launch space missions to future objects, which pass near Earth.

“But it will be 1,000 times more expensive, about US$1 billion,” he explained.

First interstellar meteorite discovered

It says CNEOS 2014-01-08 measures only 0.5 meters, and appears to be the first interstellar object discovered in the Solar System.

CNEOS 2014-01-08 is believed to be from another star system as it is moving at about 60 km per second relative to the Sun. This force was estimated to be too fast to be tied to the Sun’s gravity.

Siraj said, any object moving faster than 42 kilometers per second at the distance of the Earth from the Sun is on a hyperbolic trajectory.

This means that CNEOS 2014-01-08 exceeds the local speed limit for the bound object, and does not run into other planets in its path. So it can be detected from outside the solar system.

Previously, an object called ‘Oumuamua held the title. The object was discovered in 2017 during the Pan-STARRS sky survey, a space rock that enters the solar system at a speed of about 92,000 km/h. At the time, Loeb thought it was an alien machine.

This was followed by the discovery of Comet 2I/Borisov, the first interstellar comet discovered by amateur astronomer Gennady Borisov in Crimea in 2019.

Nation World News Desk
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