Engineering:Unmanned spacecraft

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The unmanned resupply vessel Progress M-06M Galileo space probe, prior to departure from Earth orbit in 1989
The unmanned ATV-2 Johannes Kepler approaches crewed space station International Space Station.
Spaceplane Buran launched, orbited Earth, and landed as an unmanned spacecraft in 1988 (shown here at an airshow)
  • Top: The unmanned resupply vessel Progress M-06M (upper-left). Galileo space probe, prior to departure from Earth orbit in 1989 (right). The unmanned ATV-2 Johannes Kepler approaches crewed space station ISS (lower-left).
  • Bottom: Spaceplane Buran was launched, orbited Earth, and landed as an unmanned spacecraft in 1988 (shown at an airshow).
PAGEOS test

Unmanned spacecraft are spacecraft without people ("man") on board, used for unmanned spaceflight. Unmanned spacecraft may have varying levels of autonomy from human input, they may be remote controlled, remote guided or even autonomous, meaning they have a pre-programmed list of operations, which they will execute, unless otherwise instructed by the Earth. Many habitable spacecraft also have varying levels of robotic features. For example, the space stations Salyut 7 and Mir, and the ISS module Zarya were capable of unmanned remote guided station-keeping, and docking maneuvers with both resupply craft and new modules. The most common unmanned spacecraft categories are robotic spacecraft, unmanned resupply spacecraft, space probes and space observatories. Not every unmanned spacecraft is a robotic spacecraft, for example a reflector ball is a non-robotic unmanned spacecraft.

Examples

For a more detailed list see List of Solar System probes.

Selected Lunar probes

  • Luna program — USSR Lunar exploration (1959–1976).
  • Ranger program — US Lunar hard-landing probes (1961–1965).
  • Zond program — USSR Lunar exploration (1964–1970).
  • Surveyor program — US Lunar soft-landing probe (1966–1968).
  • Lunar Orbiter program — US Lunar orbital (1966–1967).
  • Lunokhod program — USSR Lunar Rover probes (1970–1973).
  • Muses-A mission (Hiten and Hagoromo) — Japanese Lunar orbital and hard-landing probes (1990–1993).
  • Clementine — US Lunar orbital (1998).
  • Lunar Prospector — US Lunar orbital (1998–1999).
  • Smart 1 — European Lunar orbital (2003).
  • SELENE — Japanese lunar orbiter (2007).
  • Chang'e 1 — Chinese lunar orbiter (2007).
  • Chandrayaan 1 — Indian lunar orbiter (2008).
  • Lunar Reconnaissance Orbiter — US Lunar orbiter (2009).
  • LCROSS — US Lunar hard-landing probe (2009).
  • Chang'e 2 — Chinese lunar orbiter (2010).
  • Gravity Recovery and Interior Laboratory — US Lunar orbiters (2011)

Mars probes

Venus probes

  • Venera program — USSR Venus orbiter and lander (1961–1984)
  • Pioneer Venus project — US Venus orbiter and entry probes(1978)
  • Vega program — USSR mission to Venus and Comet Halley (1984)
  • Magellan probe — US Venus orbiter (1989)
  • Venus Express — ESA probe sent for the observation of the Venus's weather (2005)
  • MESSENGER - US Fly-by/Orbiter (2004)

Gas giant probes

Comet and asteroid probes

9P/Tempel collides with Deep Impact's impactor
  • International Cometary Explorer — passed through gas tail of comet 21P/Giacobini-Zinner (1985)
  • Giotto mission — European — flyby of comet 1P/Halley (1986)
  • Vega 1 & 2 — USSR — flyby of comet 1P/Halley (1986)
  • Sakigake probe — Japanese — flyby of comet 1P/Halley (1986)
  • Suisei probe — Japanese — flyby of comet 1P/Halley (1986)
  • NEAR Shoemaker — US — asteroid 433 Eros orbiter, which later landed on the asteroid's surface, launched 1996
  • Deep Space 1 — US — comet 19P/Borrelly and asteroid flyby, 1998–2000
  • Stardust probe — US — comet 81P/Wild flyby and sample return, launched 1999, flied-by 2004, returned January 15, 2006
  • CONTOUR — US — comet flyby mission (comets 2P, 73P and 6P); lost due to solid rocket motor failure shortly after launch in 2002
  • Hayabusa — Japanese — asteroid orbiter, lander and sample return, launched 2003, returned June 13, 2010
  • Rosetta — European — comet 67P/Churyumov-Gerasimenko orbiter and lander (Philae); launched 2004
  • Deep Impact — successful US comet 9P/Tempel impactor, launched 2005
  • Deep Impact/EPOXI — US — comet 103P/Hartley flyby (extended Deep Impact mission) — 2010
  • Stardust/NExT — US — comet 9P/Tempel flyby (extended Stardust mission) — 2011
  • Dawn — US launched on September 27, 2007 — orbited Vesta in 2011, and currently orbiting Ceres since 2015.

Solar observation probes

  • Ulysses — Solar particles and fields (ended 2009)
  • Genesis — First solar wind sample return mission, 2001–2004 (crash)
  • Interstellar Boundary Explorer (IBEX) — launched October 19, 2008.
  • Advanced Composition Explorer — Solar particles and fields observation at Earth-Sun L1 point
  • STEREO — Pair of probes in solar orbits providing 3D observations of Sun
  • SOHO — Solar and Heliospheric Observatory, Observer for Sun's corona and core located at L1 point

Other Solar System probes

Technology demonstrators

Unmanned resupply spacecraft

See also