Exploration of Mercury

The first probe to visit Mercury was Mariner 10.

View of Mercury from Mariner 10 in March 1975.

The exploration of Mercury has a minor role in the space interests of the world. It is the least explored inner planet.^[1] As of 2015, the Mariner 10 and MESSENGER missions have been the only missions that have made close observations of Mercury. MESSENGER made three flybys before entering orbit around Mercury.^[2] A third mission to Mercury, BepiColombo, a joint mission between the Japan Aerospace Exploration Agency (JAXA) and the European Space Agency, is to include two probes. MESSENGER and BepiColombo are intended to gather complementary data to help scientists understand many of the mysteries discovered by Mariner 10's flybys.

Compared to other planets, Mercury is difficult to explore. The speed required to reach it is relatively high, and its proximity to the Sun makes it difficult to maneuver a spacecraft into a stable orbit around it.^[3] MESSENGER was the first probe to orbit Mercury.

^ JHU/APL (2006). MESSENGER: MErcury Surface, Space ENvironment, GEochemistry, and Ranging Retrieved on 2007-01-27
^ Munsell Kirk-editor (November 6, 2006). NASA: Solar System Exploration: Missions to Mercury Archived September 29, 2006, at the Wayback Machine. Retrieved on 2007-01-27.
^ Cite error: The named reference ESA2007 was invoked but never defined (see the help page).

[JHUAPL-1] JHU/APL (2006). MESSENGER: MErcury Surface, Space ENvironment, GEochemistry, and Ranging Retrieved on 2007-01-27

[Munsell2006b-2] Munsell Kirk-editor (November 6, 2006). NASA: Solar System Exploration: Missions to Mercury Archived September 29, 2006, at the Wayback Machine. Retrieved on 2007-01-27.

[ESA2007-3] Cite error: The named reference ESA2007 was invoked but never defined (see the help page).

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