Kordylevsky clouds

For the first time, they were observed by the Polish scientist Kazimierz Kordylewski in October 1956 as luminous areas with an angular size of about 2 ° and a brightness approximately 2 times lower than the brightness of the antireflection . In March and April 1961, Kordylevsky made the first photographs of these clusters, which by then had changed their shape and size. In 1967, Kordylevsky’s observations were confirmed by the American scientist J. Wesley Simpson using the Kuiper Observatory equipment. A serious confirmation of the existence of these clouds are also the results obtained by J. Roach in 1969-1970 on the OSO-6 spacecraft ^[2] .

According to Kordylevsky, the approximate mass of these dust clouds by cosmic standards is quite small - the mass of each cloud is only about 10,000 tons ^[3] , the transverse size is estimated at 10,000 km (according to other sources ^[4] - up to 40,000 km ).

Due to the extremely low brightness of the cloud, it is rather difficult to observe from the Earth, therefore their existence has been disputed by some scientists ^[5] . The American satellites Gemini-12 , Apollo-14 , and Apollo-16 took photographs of the Lagrange points L ₄ and L ₅ , but the existence of clouds did not receive clear evidence. In 1991, the orbit of the Japanese satellite Hiten passed through the points, but there was no significant increase in the density of cosmic dust (apparently, the satellite's orbit passed somewhat away from the Kordylevsky clouds, since the clouds revolve around the Lagrange points at a distance of several degrees).

To date, the following facts have been established ^[4] in relation to the Kordylevsky clouds:

• the angular size of the clouds when observed from the Earth is about 6 °,
• the brightness of the clouds is 20 S ₁₀ ^[6] , or about 50% of the brightness of the anti-radiance ^[2] (according to other sources ^[7] - less than 3 S ₁₀ , that is, 7-10% of the brightness of the anti-radiance),
• clouds move around the Lagrange points in an elliptical zone with a major semi-axis of 6 ° along the ecliptic and a small semi-axis of 2 ° perpendicular to the ecliptic,
• the distance from the clouds to the moon decreases in the summer months and increases in the winter,
• the color of the clouds is shifted to the red region of the spectrum relative to the color of the antireflection - this may indicate a different nature of the particles that make up the clouds.

The results of observations of the substance in the vicinity of the libration points of the Earth – Moon system diverge significantly, which may indicate the complex nature of this phenomenon, in particular, due to the dynamic instability of the points L ₄ and L ₅ of the Earth – Moon system.

Confirmation

In October 2018, a group of Hungarian astronomers and physicists confirmed the existence of two subtle clouds of dust located at relatively stable points at a distance of only 400,000 kilometers from the Earth. A shot was taken of the estimated location of the cloud at point L ₅ , as a result of which polarization of light was recorded at the locations of the estimated location of the clouds, the value of which is in good agreement with the value predicted by the team built models for scattering light from dust clouds. ^[eight]

• Rings of the earth