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Artist's concept of the proposed Europa Lander mission. The list of proposed missions to the outer planets is a listing of concept studies for an uncrewed or crewed mission to gas giants. Proposed missions to gas giants are typically based on engineering and scientific assessments of technological capabilities at the time of study.
Entered orbit around 67P at 09:06 UTC on 6 August 2014. On 30 September 2016 mission ended in an attempt to slow land on the comet's surface near a 130 m (425 ft) wide pit called Deir el-Medina. Ariane 5G+ Philae: 2 March 2004: ESA / DLR Germany: 67P/Churyumov–Gerasimenko: Lander Successful: Carried by Rosetta.
Flyby; discovered Dactyl; first asteroid with a moon visited by a spacecraft, largest asteroid visited by spacecraft at the time. 253 Mathilde: 66 × 48 × 46 (58 km) 1885 NEAR Shoemaker: 1997 1,212: 49.5 Flyby; largest asteroid visited by a spacecraft at the time. 433 Eros: 34 × 11 × 11 (17 km) 1898 NEAR Shoemaker: 1998–2001 landed: landed
Lunar orbiter, a secondary payload on the IM-2 mission [6] EscaPADE: Spring 2025 Two Mars orbiters [7] Tianwen-2: May 2025 Asteroid 469219 Kamoʻoalewa sample return, comet 311P/PanSTARRS orbiter [8] Artemis II: April 2026 4-person lunar flyby [9] [10] Martian Moons eXploration: 2026 Martian moon sample return mission [11] Chang'e 7: 2026
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The JPL mission designers planned multiple launches in each block, to maximize the engineering experience and scientific value of the mission and to assure at least one successful flight. [14] Total research, development, launch, and support costs for the Ranger series of spacecraft (Rangers 1 through 9) was approximately $170 million. [15]
On 5 May 1997, NASA ended the ICE mission, leaving only a carrier signal operating. The ISEE-3/ICE downlink bit rate was nominally 2048 bits per second during the early part of the mission, and 1024 bit/s during the 21P/Giacobini–Zinner comet encounter. The bit rate then successively dropped to 512 bit/s (on 9 December 1985), 256 bit/s (on 5 ...
COmet Rendezvous, Sample Acquisition, Investigation, and Return (CORSAIR) is a concept mission to return comet nucleus samples to Earth for detailed analysis.The mission concept was submitted in May 2017 by a team from NASA's Goddard Space Flight Center in response to the New Frontiers program call for mission 4, but did not pass the initial down selection.