The Planetary Observer program is a cancelled space exploration program designed by NASA to provide cheaper planetary orbiters by using Earth-orbiting...

The Planetary Missions Program Office is a division of NASA headquartered at the Marshall Space Flight Center, formed by the agency's Science Mission Directorate...

information already gathered by the Viking program. Preliminary mission goals expected the probe to provide planetary magnetic field data, detection of certain...

Committee in 1983, the Planetary Observer program, and Mariner Mark II. The Observer program, starting with the Mars Observer, was envisioned as a series...

Frontiers program. It would launch in March 2035 and land in April 2045. Mercury Observer was a cancelled proposal in the Planetary Observer program. BepiColombo...

Planetary Missions Program Office. The cost of each mission is capped at a lower level than missions from NASA's New Frontiers or Flagship Programs....

not a comet.) From Vision and Voyages for Planetary Science in the Decade 2013–2022 Io Volcano Observer Lunar Geophysical Network Saturn Atmospheric...

Io Volcano Observer (IVO) is a proposed low-cost mission to explore Jupiter's moon Io to understand tidal heating as a fundamental planetary process. The...

A planetary flyby is the act of sending a space probe past a planet or a dwarf planet close enough to record scientific data. This is a subset of the...

The Planetary Science Decadal Survey is a serial publication of the United States National Research Council produced for NASA and other United States...