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Confirmed: two clouds of dust orbiting the earth



Astronomers and Hungarian physicists confirmed that there are two clouds of dust just 400,000 kilometers from the earth. Its existence had been questioned for decades

Color photography and radiation patterns around Lagrange point L5, held August 17, 2017 Judit Slíz-Balogh András Barta Gábor Horváth

A team of Hungarian astronomers and physicists confirmed that two clouds of dam track only 400 000 kilometers from the ground.

The new work is shown in the monthly monthly announcements of Royal Astronomical Society. The clouds, reported for the first time and named by the Polish astronomer Kazimierz Kordylewski in 1

961, are very weak, so their existence is controversial.

As explained by the Royal Astronomical Society, the soil system has five points of stability where gravity forces maintain the relative position of the objects present there. Two of these so-called Lagrange dots, L4 and L5, form a triangle of equal sides with the earth and the moon and move around the earth as the moon moves along its orbit.

L4 and L5 are not quite stable because they are disturbed by the gravity of the sun. However, they are considered places where interplanetary dust can accumulate, at least temporarily. Kordylewski observed two dust meetings near L5 1961, with several reports since then, but their extreme weakness makes them difficult to detect and many researchers doubted their existence.

In the newspaper, the researchers in Eötvös Loránd University wrote the clouds to evaluate how they are formed and how they can be detected. Researchers were interested in their appearance using polarizing filters that transmit light with a certain direction of swing, similar to those found in some types of sunglasses. The scattered or reflected light is always more or less polarized, depending on the angle of diffusion or reflection.

Then they sat down to look for the dusty coast. With a linear polarization filter system connected to a camera lens and a CCD detector at Judit Slíz-Balogh's private observatory in Hungary (Badacsonytördemic), the researchers exposed the supposed site of the Kordylewski cloud at point L5.

According to Science Daily, they display the pictures they obtained polarized light reflected in the dust, which stretches well out of the field of vision of the camera lens. The observed pattern coincides with the predictions of the same group of researchers in a previous article and corresponds to the earliest observations of the Kordylewski clouds six decades ago. Horváth's group was able to throw away optical artifacts and other effects, which means that the presence of dust shakers is confirmed.

ABC notes that L4 and L5 are seen as potential locations for space probes in circulation and transfer for missions exploring the wider solar system. There are also proposals for storing pollutants in the two points. Future research will analyze L4 and L5 and the associated Kordylewski clouds, in order to understand how stable they really are and if their dust is a threat to law and future astronauts.


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