President of Ukraine Volodymyr Zelensky has signed a law that allows reservists to be called up for service in a day without declaring mobilization. This was reported on April 21 by the press service of the Ukrainian President.

According to the Department of Information and Mass Communications of the Ministry of Defense of the Russian Federation, on April 20, 2021, a meeting of the Board of the Ministry of Defense of the Russian Federation was held in Moscow at the National Defense Management Center of the Russian Federation under the leadership of the head of the military department, Army General Sergei Shoigu.

According to an informed source, the latest Russian fifth-generation fighter Su-57 will be able to carry more than a dozen different unmanned aerial vehicles in the fuselage compartments. To do this, the aircraft will be upgraded.

The Ethiopian Air Force has lost a fire support helicopter. In the Network there were video frames taken at the site of the fall of the rotorcraft, which almost completely collapsed. The crew of three on board was killed.

The F-15EX Eagle II fighter of the US Air Force, considered an analogue of the Russian Su-57, received probably the most powerful radar in the world for this type of aircraft, reports The Drive, referring to the developer of the radar station Michelle Stychinsky from Raytheon.

UBS L-39NG of the Czech company Aero Vodochody with serial number 0476 arrived on April 18 at the air base "Sliac "(Slovakia) for an official presentation to the Air Force of this country.

American F-15E Strike Eagle fighter-bombers will arrive on Wednesday for one day in Estonia for training flights.

In China, for the first time, an image of the new Feilong-2 heavy-duty strike drone was publicly shown. The machine is made according to the "flying wing" scheme, equipped with jet engines and has low radar visibility, writes dambiev.

As reported in Roscosmos, the court imposed a fine of 100 thousand rubles

The Court of Appeal overturned the decision to suspend construction work on the launch complex "Angara" of the Vostochny cosmodrome. This was reported to TASS in the press service of Roscosmos on Wednesday.

The NASA technical team discussed the possibility of undocking the Russian segment of the ISS after Russia's withdrawal from the project. This was announced on Wednesday, April 21, by a source of "RIA Novosti".

Russia is considering the possibility of transferring its segment to the International Space Station (ISS) The United States after 2025. This was announced on April 21 by the head of the state corporation "Roscosmos" Dmitry Rogozin.

Earlier, the head of Roscosmos said that RSC Energia has set a task to ensure the readiness of the first base module for the station in 2025

The Science and Energy Module (NEM), which was created for the ISS, will be redesigned for the Russian space station. This was reported to journalists by the General Director of Roscosmos Dmitry Rogozin.

The new Russian space station will not be permanently inhabited, like the ISS, due to radiation exposure in a high-latitude orbit, said the head of Roscosmos Dmitry Rogozin.

Vladimir Solovyov, flight director of the Russian segment of the ISS, First Deputy General Designer for flight operation and testing of rocket and space complexes and systems of RSC Energia, noted that the discussion on the creation of the station has been going on for a long time.

This initiative was made by academician Lev Zeleny

The General Meeting of the Russian Academy of Sciences plans to once again take the initiative to create a space council under the President of the Russian Federation. This was stated by the President of the Academy Alexander Sergeev at the general meeting of the Russian Academy of Sciences.

Russia has a space constellation of 162 satellites. This was announced on April 21 by the General Director of Reshetnev Information Satellite Systems (part of Roscosmos») Nikolai Testoyedov at the general meeting of the Russian Academy of Sciences.

According to experts, it will be able to determine the landing site for astronauts, as well as collect samples of lunar soil

Russian scientists are considering the possibility of delivering a robot MARFA to the moon, which will be able to collect soil samples for research. This was stated by the scientific director of the Space Research Institute of the Russian Academy of Sciences Lev Zeleny during the general meeting of the Russian Academy of Sciences.

The results of scientific research and samples of devices were demonstrated to the experts of the optoelectronic industry and representatives of the leading technical universities of the Russian Federation by the participants of the final round of the corporate project of the Shvabe holding "The Power of Light-2021".

Amazon has signed an agreement with the United Launch Alliance (ULA), which involves launching Kuiper satellite Internet spacecraft on nine Atlas V rockets, Ars Technica reports.

We are talking, in particular, about Chinese research with the potential participation of Russia, said former US senator and astronaut Bill Nelson

China's space exploration, including lunar exploration and potentially involving Russia, should be of concern to the United States.