/sci/ - Science & Math

The first results of the scientific instruments of the Luna-25 automatic station in lunar orbit
During the flight, several activations of scientific equipment were carried out

The neutron and gamma-ray spectrometer HADRON-LR registered the most intense lines of chemical elements of the lunar soil in the energy spectrum of gamma rays.

ARIES-L ion energy-mass analyzer was turned on in the Moon's orbit, designed to study the near-surface ion exosphere in the circumpolar region of the Moon. The data made it possible to choose the optimal mode of operation of the device on the surface of the Moon for measuring the energy spectra of particles in the energy range from 10 eV to 3000 eV.

Device, designed to register microparticles levitating near the surface of the Moon and determine the parameters of the surrounding plasma, registered a micrometeorite impact event. Most likely, this micrometeorite belongs to the Perseid meteor shower, which the Luna-25 spacecraft managed to successfully cross during the flight to the Moon.

Based on the results of processing two frames of the Moon survey taken on August 17 by the landing cameras of the STS-L system, specialists of the ICI RAS carried out a binding to a digital relief model. This technology will allow in the future to significantly improve the accuracy of knowledge of the orbit of the spacecraft.

These pictures show the Zeeman crater. In the list of the twenty deepest craters of the southern hemisphere of the Moon, it is in third place. It has an unusual size ratio: diameter — about 190 km, depth — about 8 km. Its formation is associated with a very strong impact, which is possible if the speed of the striker is very high or his substance is very dense.

Detailed photographs show that the crater floor is dotted with smaller ones. This happens if part of the substance ejected on impact fell back and created numerous small "potholes". Such formations are very interesting from the point of view of lunar geology.