This article documents notable spaceflight events during the year 2020.

Overview

Astronomy and astrophysics

The GECAM A and B satellites were launched on 9 December. They were built for research in electromagnetic counterparts of

gravitational waves Gravitational waves are oscillations of the gravitational field that travel through space at the speed of light; they are generated by the relative motion of gravitating masses. They were proposed by Oliver Heaviside in 1893 and then later by H ...

Exploration of the Solar System

Three missions to

Mars Mars is the fourth planet from the Sun. It is also known as the "Red Planet", because of its orange-red appearance. Mars is a desert-like rocky planet with a tenuous carbon dioxide () atmosphere. At the average surface level the atmosph ...

were launched in 2020, including two rovers, two orbiters, and a lander.

NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States ...

has launched the

Mars 2020 mission Mars 2020 is a NASA mission that includes the rover ''Perseverance (rover), Perseverance'', the now-retired small robotic helicopter ''Ingenuity (helicopter), Ingenuity'', and associated delivery systems, as part of the Mars Exploration Progra ...

, which includes the ''Perseverance'' rover and ''Ingenuity'' helicopter, and will cache samples for eventual return to

Earth Earth is the third planet from the Sun and the only astronomical object known to Planetary habitability, harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all ...

. The

China National Space Administration The China National Space Administration (CNSA) is a government agency of the People's Republic of China headquartered in Haidian District, Haidian, Beijing, responsible for civil space administration and international space cooperation. These ...

(CNSA) has launched its Tianwen-1 mission, which includes an orbiter, a lander, a small rover and a group of deployable and remote cameras; it is China's first mission to another planet using its own delivery vehicle. Finally, the

United Arab Emirates The United Arab Emirates (UAE), or simply the Emirates, is a country in West Asia, in the Middle East, at the eastern end of the Arabian Peninsula. It is a Federal monarchy, federal elective monarchy made up of Emirates of the United Arab E ...

, in partnership with American universities, has launched the

Hope Mars Mission The Emirates Mars Mission () is a United Arab Emirates Space Agency uncrewed space exploration mission to Mars. The ''Hope'' probe (, ''Misbar Al-Amal'') was launched on 20 July 2020, and went into orbit around Mars on 9 February 2021. The ...

orbiter on a Japanese rocket. In November, China launched

Chang'e 5 Chang'e 5 () was the fifth lunar exploration mission in the Chinese Lunar Exploration Program of CNSA, and China's first lunar sample-return mission. Like its predecessors, the spacecraft is named after the Chinese moon goddess, Chang'e. ...

, the first

sample-return mission A sample-return mission is a spacecraft mission to collect and return samples from an extraterrestrial location to Earth for analysis. Sample-return missions may bring back merely atoms and molecules or a deposit of complex compounds such as lo ...

to the Moon since

Luna 24 ''Luna 24'' was a robotic probe of the Soviet Union's Luna programme. The 24th mission of the Luna series of spacecraft, the mission of the ''Luna 24'' probe was the third Soviet mission to return lunar soil samples from the Moon (the first t ...

in 1976. Chang'e 5 used the recently developed

Long March 5 Long March 5 (LM-5; zh, s=长征五号 , p=Chángzhēng wǔ hào) or Changzheng 5 (CZ-5), also known by its nickname "''Pang-Wu''" (胖五, "''Fat-Five''"), is a Chinese heavy-lift launch vehicle developed by the China Academy of Launch Vehicl ...

heavy-lift rocket. The mission performed the first-ever robotic

lunar orbit rendezvous Lunar orbit rendezvous (LOR) is a process for landing humans on the Moon and returning them to Earth. It was utilized for the Apollo program missions in the 1960s and 1970s. In a LOR mission, a main spacecraft and a lunar lander travel to lunar or ...

and returned of

lunar soil Lunar regolith is the unconsolidated material found on the selenography, surface of the Moon and in the Lunar atmosphere, Moon's tenuous atmosphere. Sometimes referred to as Lunar soil, Lunar soil specifically refers to the component of regoli ...

and rock samples on 16 December. NASA's

OSIRIS-REx OSIRIS-REx was a NASA asteroid-study and sample-return mission that visited and collected samples from 101955 Bennu, a C-type asteroid, carbonaceous near-Earth object, near-Earth asteroid. The material, returned in September 2023, is expected ...

mission landed on asteroid

101955 Bennu 101955 Bennu ( provisional designation ) is a carbonaceous asteroid in the Apollo group discovered by the LINEAR Project on 11 September 1999. It is a potentially hazardous object that is listed on the Sentry Risk Table and has the second hig ...

in October to obtain a surface sample for return to Earth.

JAXA The is the Japanese national air and space agency. Through the merger of three previously independent organizations, JAXA was formed on 1 October 2003. JAXA is responsible for research, technology development and launch of satellites into o ...

Hayabusa2 is an asteroid sample-return mission operated by the Japanese state space agency JAXA. It is a successor to the ''Hayabusa'' mission, which returned asteroid samples for the first time in June 2010. ''Hayabusa2'' was launched on 3 December 2 ...

mission returned samples of

162173 Ryugu 162173 Ryugu ( provisional designation ) is a near-Earth object and also a potentially hazardous asteroid of the Apollo group. It measures approximately in diameter and is a dark object of the rare spectral type Cb, with qualities of both a ...

to Earth on 5 December 2020, with its re-entry vehicle recovered in Woomera, Australia.

Heliophysics

One solar mission was launched: ESA's

Solar Orbiter The Solar Orbiter (SolO) is a Sun-observing probe developed by the European Space Agency (ESA) with a National Aeronautics and Space Administration (NASA) contribution. Solar Orbiter, designed to obtain detailed measurements of the inner heli ...

, on 10 February 2020, intended to study the Sun's

heliosphere The heliosphere is the magnetosphere, astrosphere, and outermost atmospheric layer of the Sun. It takes the shape of a vast, tailed bubble-like region of space. In plasma physics terms, it is the cavity formed by the Sun in the surrounding ...

Parker Solar Probe The Parker Solar Probe (PSP; previously Solar Probe, Solar Probe Plus or Solar Probe+) is a NASA space probe launched in 2018 to make observations of the Stellar corona, Sun's outer corona. It used repeated Gravity assist, gravity assists from ...

, launched in 2018, decreased its minimal distance to the Sun further to 14.2 million km.

Earth sciences satellites

ESA's

Sentinel-6 The Sentinel-6 Michael Freilich (S6MF) or Sentinel-6A is a radar altimeter satellite developed in partnership between several European and American organizations. It is part of the Jason satellite series and is named after Michael Freilich. S6 ...

ocean topography measuring satellite was launched on 21 November. The launch of the

TARANIS Taranis (sometimes Taranus or Tanarus) is a Celtic thunder god attested in literary and epigraphic sources. The Roman poet Lucan's epic ''Pharsalia'' mentions Taranis, Esus, and Teutates as gods to whom the Gauls sacrificed humans. This rare ...

satellite, planned to study transient events in the Earths atmosphere, failed on 17 November.

Human spaceflight

In the United States,

SpaceX Space Exploration Technologies Corp., commonly referred to as SpaceX, is an America, American space technology company headquartered at the SpaceX Starbase, Starbase development site in Starbase, Texas. Since its founding in 2002, the compa ...

Dragon 2 Dragon 2 is a class of partially reusable spacecraft developed, manufactured, and operated by the American space company SpaceX for flights to the International Space Station (ISS) and private spaceflight missions. The spacecraft, which cons ...

spacecraft made its first crewed flight to the

International Space Station The International Space Station (ISS) is a large space station that was Assembly of the International Space Station, assembled and is maintained in low Earth orbit by a collaboration of five space agencies and their contractors: NASA (United ...

on 31 May 2020 as part of the

Commercial Crew Program The Commercial Crew Program (CCP) provides Private spaceflight, commercially operated human spaceflight, crew transportation service to and from the International Space Station (ISS) under contract to NASA, conducting crew rotations between t ...

, enabling American human orbital spaceflight capability for the first time since the

Space Shuttle The Space Shuttle is a retired, partially reusable launch system, reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. ...

's retirement in 2011. Dragon 2 became the first commercial system to fly humans to Earth orbit. The second crewed Dragon mission and its first operational mission,

Crew-1 SpaceX Crew-1 (was also known as USCV-1 or simply Crew-1) was the first operational crewed flight of a Crew Dragon spacecraft and the maiden flight of the Crew Dragon ''Resilience'' spacecraft. It was also the second crewed orbital flight la ...

, launched on 15 November 2020. China conducted an uncrewed flight test of a next generation crewed spacecraft in May 2020, and continues preparations for the 2021 launch of the Tianhe Core Cabin Module of the

Chinese Space Station Tiangong (), officially the ''Tiangong'' space station (), is a permanently crewed space station constructed by China and operated by China Manned Space Agency. Tiangong is a modular design, with modules docked together while in low Earth ...

. NASA astronaut Christina Koch set a women's record-breaking 328 days spaceflight ending on 6 February 2020. Francisco Rubio holds the all-time American record with 370 days; Cosmonaut Valeri Polyakov, still holding the record, had the all-time spaceflight length record of 437 days but died in 2022. Koch also participated in the first all-female spacewalk with Jessica Meir on 18 October 2019.

Rocket innovation

made three atmospheric test flights with prototypes of its fully reusable two-stage-to-orbit vehicle

Starship A starship, starcraft, or interstellar spacecraft is a theoretical spacecraft designed for interstellar travel, traveling between planetary systems. The term is mostly found in science fiction. Reference to a "star-ship" appears as early as 1 ...

. The trend towards cost reduction in access continued and several rockets made their maiden flights in 2020. Despite the increasing competition the cost of delivering cargo to the ISS went up.

Satellite innovation

SpaceX started operation of its

Starlink Starlink is a satellite internet constellation operated by Starlink Services, LLC, an international telecommunications provider that is a wholly owned subsidiary of American aerospace company SpaceX, providing coverage to around 130 countries ...

constellation in late 2020. As of 2 December 2020, 955 satellites have been launched and Starlink is in a public beta testing phase.

OneWeb OneWeb Communications Ltd., doing business as Eutelsat OneWeb, is a subsidiary of the French group Eutelsat providing broadband satellite Internet services in low Earth orbit (LEO). The company is headquartered in London, and has offices in P ...

planned to start service in 2020 as well, but filed for bankruptcy in March 2020 after 74 satellites were launched. OneWeb emerged from bankruptcy and plans to restart launches in December 2020. The

Mission Extension Vehicle The Mission Extension Vehicle (MEV) is a spacecraft that extends the functional lifetime of another spacecraft through on-orbit satellite servicing. They are 2010s-design small-scale in-space satellite-refueling spacecraft first launched in 20 ...

MEV-1 became the first telerobotically-operated spacecraft to service another satellite on-orbit when it completed the first phase of a 5-year mission to extend the life of the Intelsat 901 (I-901) satellite. In February 2020, MEV-1 captured the

communications satellite A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a Transponder (satellite communications), transponder; it creates a communication channel between a source transmitter and a Rad ...

, which had been moved to graveyard orbit some months before. In April 2020, MEV-1 successfully brought Intelsat-901 it back to position in

geosynchronous A geosynchronous orbit (sometimes abbreviated GSO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours, 56 minutes, and 4 seconds (one sidereal day). The synchronization of rotation and orbital ...

orbit where it is now expected to operate for another five years. This was a space industry first as satellite servicing had previously been accomplished only with on-orbit human assistance, during the missions to service the

Hubble Space Telescope The Hubble Space Telescope (HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the Orbiting Solar Observatory, first space telescope, but it is one of the largest and most ...

in the early 2000s.

Orbital launches

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