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Montage of planets and some moons that the two Voyager spacecraft have visited and studied. It is the only program that visited all four outer planets. A total of nine spacecraft have been launched on missions that involve visits to the outer planets; all nine missions involve encounters with Jupiter, with four spacecraft also visiting Saturn.
The exploration mission revealed that Neptune's atmosphere is very dynamic, even though it receives only three percent of the sunlight that Jupiter receives. Winds on Neptune were found to be the strongest in the Solar System, up to three times stronger than Jupiter's and nine times stronger than the strongest winds on Earth.
Date of landing/impact Coordinates Notes Mars 2 lander: USSR: 27 November 1971: First man-made object on Mars. No contact after crash landing. Mars 3 lander: USSR: 2 December 1971: First soft landing on Mars. Transmission began about 90 seconds after landing. [4]
Since then, increasingly distant planets have been reached, with probes landing on or impacting the surfaces of Venus in 1966 , Mars in 1971 (Mars 3, although a fully successful landing didn't occur until Viking 1 in 1976), the asteroid Eros in 2001 (NEAR Shoemaker), Saturn's moon Titan in 2004 , the comets Tempel 1 (Deep Impact) in 2005, and ...
Vostok 1 – First crewed Earth orbiter Mariner 2 – First successful Venus flyby Mariner 4 – First successful Mars flyby Luna 9 – First successful lunar lander Zond 5 – First lunar flyby and return to Earth, first terrestrials to circle the Moon Apollo 8 – First crewed lunar orbiter Apollo 11 – First crewed lunar landing
List of Mars landers S.No Landers Launch date Landing date Mass (kg) [1] Landing site Region Status Country MOLA Entry velocity References 1. Mars 2MV-3 No.1: 04 Nov 1962 25 Nov 1962 890 - - Failure Soviet Union - - [2] 2. Mars 2: 19 May 1971 27 Nov 1971 1210 45°S 47°E ♦ - Failure Soviet Union - - [3] [4] 3. Mars 3: 28 May 1971 02 Dec 1971 ...
Mars 5 collected images and other data from Mars for 22 days. [12] Mars 6 Lander: Mars 5 August 1973 12 March 1974 impact: 220 days (7 mo, 8 d) Mars 6 crash-landed on Mars and contact with the craft was lost. [13] Venera 9 orbiter and lander Venus 8 June 1975 20 October 1975 entered orbit 22 October 1975 landed: 135 days (4 mo, 13 d)
Timelapse of Voyager 2 approaching Jupiter. The plains of Pluto, as seen by New Horizons after its nearly 10-year voyage. Remotely guided space probes have flown by all of the observed planets of the Solar System from Mercury to Neptune, with the New Horizons probe having flown by the dwarf planet Pluto and the Dawn spacecraft currently orbiting the dwarf planet Ceres.