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22 小時前 · Cassini–Huygens →. Galileo was an American robotic space program that studied the planet Jupiter and its moons, as well as several other Solar System bodies. Named after the Italian astronomer Galileo Galilei, the Galileo spacecraft consisted of an orbiter and an atmospheric entry probe.
22 小時前 · Asteroid mining is the hypothetical extraction of materials from asteroids and other minor planets, including near-Earth objects. [1] Notable asteroid mining challenges include the high cost of spaceflight, unreliable identification of asteroids which are suitable for mining, and the challenges of extracting usable material in a space environment.
22 小時前 · The observation demonstrated conclusively that Mercury orbited the Sun. [25] A rare event in astronomy is the passage of one planet in front of another ( occultation ), as seen from Earth. Mercury and Venus occult each other every few centuries, and the event of May 28, 1737, is the only one historically observed, having been seen by John Bevis at the Royal Greenwich Observatory . [167]
22 小時前 · Google Earth. Google Earth is a computer program that renders a 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Users can explore the globe by entering ...
22 小時前 · Project Gemini (IPA: /ˈdʒɛmɪni/) was the second United States human spaceflight program to fly. Conducted after the first American manned space program, Project Mercury, while the Apollo program was still in early development, Gemini was conceived in 1961 and concluded in 1966. The Gemini spacecraft carried a two-astronaut crew. Ten Gemini ...
22 小時前 · Europa / j ʊ ˈ r oʊ p ə / , or Jupiter II, is the smallest of the four Galilean moons orbiting Jupiter, and the sixth-closest to the planet of all the 95 known moons of Jupiter.It is also the sixth-largest moon in the Solar System.Europa was discovered independently by Simon Marius and Galileo Galilei [2] and was named (by Marius) after Europa, the Phoenician mother of King Minos of Crete ...
22 小時前 · Uzbekistan, [a] officially the Republic of Uzbekistan, [b] is a doubly landlocked country located in Central Asia.It is surrounded by five countries: Kazakhstan to the north, Kyrgyzstan to the northeast, Tajikistan to the southeast, Afghanistan to the south, and Turkmenistan to the southwest, making it one of only two doubly landlocked countries on Earth, the other being Liechtenstein.
