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Mark Robert Showalter (born December 5, 1957) is a senior research scientist at the SETI Institute. [1] He is the discoverer of six moons and three planetary rings. He is the Principal Investigator of NASA's Planetary Data System Rings Node, a co-investigator on the Cassini–Huygens mission to Saturn, and works closely with the New Horizons mission to Pluto.
STS-34 was a NASA Space Shuttle mission using Atlantis.It was the 31st shuttle mission overall, and the fifth flight for Atlantis. [1] STS-34 launched from Kennedy Space Center, Florida, on October 18, 1989, and landed at Edwards Air Force Base, California, on October 23, 1989.
The north pole had been photographed before, by Mariner 10 in 1973, but Galileo 's cameras, with their 1.1 kilometers (0.68 mi) per pixel imagery, provided new information about a region that still held some scientific mysteries. The infrared spectromer surveyed the surface minerals and revealed that the region was more minerallogically diverse ...
At launch, the orbiter and probe together had a mass of 2,562 kg (5,648 lb) and stood 6.15 m (20.2 ft) tall. [2] Spacecraft are normally stabilized either by spinning around a fixed axis or by maintaining a fixed orientation with reference the Sun and a star; Galileo did both.
[11] [39] They intend to use astronomical surveys like the Vera C. Rubin Observatory so that such objects can be identified more quickly, and to design a space mission so a probe could intercept it and gather close-up data. [11] [1] [2] The team intends to develop software that "will analyze data collected from the Vera Rubin Observatory". [18]
1 Galileo-IOV FM1 GSAT0101 (Thijs) L1 21 October 2011 10:30 Guiana, ELS: Soyuz ST-B / Fregat-MT: VS-01 E11 B05 RAFS – Operational: IOV (In Orbit Validation) vehicles. Initially used for signal validation. [10] Healthy spacecraft are still part of the operative fleet. 2 Galileo-IOV FM2 GSAT0102 (Natalia) E12 B06 RAFS – Operational: 3 Galileo ...
Galileo observed the Loki volcano (largest in the Solar System) and a new eruption in the southern region of the moon. I33 102 (63) 17 January 2002 This was the closest of all the flybys of Io. The moon provided a gravity-assist necessary for Galileo ' s ultimate collision course with Jupiter.
Launch date Description Ref(s) Sputnik 1: 4 October 1957 First Earth orbiter [1] [2] Sputnik 2: 3 November 1957 Earth orbiter, first animal in orbit, a dog named Laika [2] [3] [4] Explorer 1: 1 February 1958 Earth orbiter; discovered Van Allen radiation belts [5] Vanguard 1: 17 March 1958 Earth orbiter; oldest spacecraft still in Earth orbit [6 ...