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Comet Mission Outcome Remarks Carrier rocket [2] ICE (ISEE-3) 12 August 1978: NASA United States / ESA: 21P/Giacobini–Zinner: Flyby Successful Extended mission; Closest approach of 7,862 kilometres (4,885 mi) at 11:02 UTC on 11 September 1985. Also made distant observations of 1P/Halley in May 1986. [3] Delta 2914: Vega 1 (5VK No.901) 15 ...
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
Galileo 's prime mission was a two-year study of the Jovian system, but on March 26, 1993, while it was en route, astronomers Carolyn S. Shoemaker, Eugene M. Shoemaker and David H. Levy discovered fragments of a comet orbiting Jupiter, the remains of a comet that had passed within Jupiter's Roche limit and had been torn apart by tidal forces.
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.
Here are some of the biggest space missions ahead. Moon fever continues ... which is thought to be the site of an ancient asteroid impact. The mission is part of NASA’s Commercial Lunar Payload ...
All five missions were successful, and 99% of the Moon was mapped from photographs taken with a resolution of 60 meters (200 ft) or better. The first three missions were dedicated to imaging 20 potential human lunar landing sites, selected based on Earth-based observations. These were flown at low inclination orbits.
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 ...
The research team believes an asteroid impact created the basin about 4.2 billion to 4.3 billion years ago and unearthed magnesium-rich minerals like olivine, mixing them into the lunar soil, said ...