Encyclopedia > Space probe

  Article Content

Unmanned space mission

Redirected from Space probe

Unmanned space missions are those using remote-controlled spacecraft. The first such mission was the Sputnik I mission, launched October 4, 1957. Unmanned missions are often more effective in carrying out scientific and observational missions than manned space missions, due to lower cost and lower risk factors.

Most American unmanned missions have been coordinated by the Jet Propulsion Laboratory, and European missions by ESOC, part of ESA (the European Space Agency). ESA has conducted relatively few space exploration missions (one example is the Giotto mission, which encountered comet Halley). ESA has, however, launched various spacecraft to carry out astronomy, and is a collaborator with NASA on the Hubble space telescope.

Unmanned programs through the ages (first mission year given, if known):

Table of contents

Early Earth-orbital missions

Earth observation satellites

Communication satellites

Lunar exploration

Solar System exploration

See also:

External link

  1. http://sci.esa.int/home/ourmissions/index.cfm



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Chesty Puller

... United States, and participated in over forty engagements during the ensuing five years against the Caco[?] rebels. In March 1924 he returned stateside and was again ...