50 lat temu:
9 maja 1971 roku nastąpił nieudany start RN Atlas-SLV3C Centaur-D booster (AC-24) z sondą
Mariner 8.
30 maja 1971 nastąpił udany start RN Atlas-SLV3C Centaur-D booster (AC-24) z sondą
Mariner 9.
10 maja 1971 wystartowała RN Proton z
Kosmos 419. Nie udał się odlot na trajektorię międzyplanetarną.
19 maja 1971
Mija 50 lat od startu sondy Mars-2
Lot zakończył się pierwszym twardym lądowaniem na Marsie
28 maja 1971 Rakieta nośna Proton wyniosła udanie sondę
Mars-3 na trajektorię międzyplanetarną wiodącą ku Marsowi.
Mariner 9 Launches - 19712679 wyświetleń•30 maj 2017
http://www.astronautix.com/m/mariner8-9.htmlhttps://space.skyrocket.de/doc_sdat/mariner-8.htmhttps://www.forum.kosmonauta.net/index.php?topic=2098.msg79065#msg7906550 Years Ago: Mariner 9 Launches to Orbit MarsJun 1, 2021
1) Liftoff of Mariner 8.
2) Launch of Mariner 9.Following the successes of the Mariner 6 and 7 fly-bys of Mars in 1969, NASA’s next goal in Martian exploration involved placing spacecraft into orbit around the Red Planet. The Mariner-Mars 1971 project, managed by NASA’s Jet Propulsion Laboratory in Pasadena, California, planned to insert two spacecraft, Mariner 8 and 9, equipped with cameras and other instruments, into elliptical orbits around Mars to study the planet for a minimum of 90 days. The two spacecraft had complementary but overlapping missions, with one mapping up to 70% of the planet’s surface while the second focused on recording temporal changes in the planet’s atmosphere and on its surface. Following
Mariner 8’s launch failure,
Mariner 9 picked up the combined objectives of both spacecraft. Mariner 9 launched successfully on May 30, 1971, and entered orbit around Mars on Nov. 13, 1971. (...)
The first, an orbiter, launched from the Baikonur Cosmodrome in Kazakhstan on May 10 but failed to leave Earth orbit and the Soviets called it Kosmos 419 to hide its true identity.
Mars 2 and 3, combined orbiter and lander spacecraft, launched on May 19 and 28, respectively, successfully left Earth orbit, and began their interplanetary journeys. Mars 2 reached its destination on Nov. 27, 1971, and released its lander which entered the Martian atmosphere at too steep an angle and crashed on the surface, the first spacecraft to reach the surface of Mars. Meanwhile the orbiter entered an elliptical orbit around Mars. Mars 3 arrived on Dec. 2, 1971, and released its lander that made the first soft-landing on Mars in the Ptolamaeus Crater. However, the lander stopped transmitting after only 20 seconds and did not return any useable data and could not deploy its PrOP-M rover. (...)
https://www.nasa.gov/feature/50-years-ago-mariner-9-launches-to-orbit-marsПолвека запуску станции «Марс-3»28.05.2021 02:45
50 лет назад, 28 мая 1971 года, с космодрома Байконур при помощи ракеты-носителя «Протон-К» с разгонным блоком «Д» выполнен запуск автоматической межпланетной станции «Марс-3» на траекторию полета к Марсу. Она была предназначена для исследования Красной планеты как с орбиты, так и непосредственно на ее поверхности. (...)
https://www.roscosmos.ru/31263/Mars 2,3 1971 USSRhttp://www.astronautix.com/m/marsm-71.htmlhttps://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1971-049Fhttps://www.forum.kosmonauta.net/index.php?topic=2798.msg101874#msg101874