On April 19, 2018 at 11:16 UTC the Russian "Proton-M” rocket-carrier was launched from Baykonur Cosmodrome. The rocket equipped with the "Briz-M” booster orbited the Russian military communication satellite. The Russian Defense Ministry officially named the satellite as “Kosmos-2526”, the next number in the Russian government’s naming scheme for military spacecraft.
On April 18, 2018 at 22:51 UTC the “Falcon-9” rocket-carrier was launched from Cape Canaveral launch site of US Air Force. The rocket orbited the US Transiting Exoplanet Survey Satellite (TESS) to find planets around other stars that are close enough for detailed follow-ups by future telescopes.
On April 14, 2018 at 22:13 UTC the “Atlas-5” rocket-carrier was launched from Cape Canaveral launch site of US Air Force. The launch was performed by United Launch Alliance supported by the 45th Space Wing of US Air Force. The rocket orbited CBAS (Continuous Broadcast Augmenting SATCOM) military communication satellite and EAGLE (ESPA Augmented GEO Laboratory Experiment) satellite. The US Air Force says EAGLE will a pathfinder for future missions, demonstrating a maneuverable satellite design that could help the military launch new capabilities at less cost.
On April 11, 2018 at 22:34 UTC the Indian “PSLV-XL” (Polar Satellite Launch Vehicle) rocket-carrier was launched from the Satish Dhawan Space Center on Sriharikota Island, India's primary launch site on the country's east coast. The rocket orbited the “IRNSS-1I” navigation satellite.
On April 10, 2018 at 04:25 UTC, the “Long March – 4C” (“Changzheng-4C”) rocket-carrier was launched from Jiuquan Satellite Launch Center in Jiuquan, Gansu Province, the northwest of China. The rocket orbited 3 “Yaogan-31” military surveillance satellites and an experimental nanosatellite. The trio of the “Yaogan-31” space vehicles are believed by Western analysts to be maritime reconnaissance satellites, helping Chinese military authorities track foreign naval movements. A nanosatellite will conduct unspecified technological experiments in space.
On April 6, 2018 at 21:34 UTC the Ariane 5” rocket-carrier was launched from Kourou Cosmodrome in French Guiana. The rocket orbited 2 communication satellites: the British "HYLAS-4” European communication satellite and Japanese " DSN-1/Superbird-8” communication satellite.
On April 4, 2018 at 13:00 UTC, the private U.S. unmanned supply spacecraft, the "Dragon” SpX-14 (CRS-14 flight), was successfully docked to the International Space Station. The linkup operation was carried out with the help of the giant 17-meter Canadarm. The capture with Canadarm-2 was performed by Japanese astronaut Norishige Kanai and American astronaut Scott Tingle at 10:40 UTC. The Dragon spacecraft was maneuvered into position and attached to a berthing port on the space station's Harmony module by ground controllers in Houston and Canada. This docking marked the 14th time a Dragon spaceship has reached the space station, counting a demonstration flight in 2012. It is the second flight of the same Dragon’s capsule. The same capsule was used during SpaceX CRS-8 mission.
On April 2, 2018 at 20:30 UTC the "Falcon 9” rocket-carrier was launched from SLC-40 of the Cape Canaveral Air Force Station, Florida, USA. The launch was performed by the "SpaceX” private company supported by the 45th Space Wing of US Air Force. US private company SpaceX launched its "Dragon” (CRS-14 flight also known as SpX-14) unmanned spacecraft on a cargo resupply mission to the International Space Station. CRS means Commercial Resupply Services. It is the 15th successful flight of a “Dragon” spacecraft and the 14th successful flight of a “Dragon” to the ISS.
On April 2, 2018 at 00:16 UTC, the Chinese “Tiangong-1” space station re-entered Earth’s atmosphere over the southern Pacific Ocean. The most of “Tiangong-1” was expected to burn up during re-entry. The mission control center in Beijing monitored the space station’s descent. The Russian 821st Main Space Intelligence Centre as well as United States Space Surveillance Network also monitored the space station’s descent.
The registered letter was sent from the Post office which situated not far from the Russian 821st Main Space Intelligence Centre. Total 56 such registered letters were sent at that day.