ИСТИНА

SiriusSat-1 and SiriusSat-2 are two Russian educational 1U CubeSats. The scientific and educational satellites were assembled by schoolchildren in cooperation with SPUTNIX specialists on the basis of the nanosatellite platform OrbiCaft-Pro developed by the company. The platform has a standardized international standard size 1U CubeSats. The satellite SiriusSat have been further developed to meet the specifics of launch: they have a handle for launching an astronaut, flexible antennas, a system for the manual activation of spacecraft, and also equipped with specially designed protective quick-release covers and soft shipping containers. The weight of each satellite is about 1.3 kg. The payload of the satellite is a space particle detector for studying "space weather". The sensor was developed by the Research Institute of Nuclear Physics of the Moscow State University and was assembled with the participation of a group of schoolchildren from the Sirius Educational Center. Roskosmos helped in organizing free-of-charge sending to orbit within the framework of the corporation's program for the free launch of Russian school and student satellites. Subsequently, it was decided that two identical spacecraft - SiriusSat-1 and SiriusSat-2 would be launched into space at once. The satellites passed additional checks at RSC Energia, before being sent to the ISS. The launch of two nano-satellites to the station took place on 9 July 2018 on board the Progress-MS 09, and they were deployed on 15 August 2018 by kosmonavts Oleg Artemjev and Sergej Prokop'ev during a spacewalk.