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2 天前 · Spacecraft components. The 3.7 m (12 ft) diameter high gain dish antenna used on the Voyager craft. Voyager 1 was built by the Jet Propulsion Laboratory (JPL). It has 16 hydrazine thrusters, three-axis stabilization gyroscopes, and referencing instruments to keep the probe's radio antenna pointed toward Earth.
- September 5, 1977, 12:56:00 UTC
- Titan IIIE
- 815 kg (1,797 lb)
2 天前 · Alpha Centauri (α Centauri, Alpha Cen, or α Cen) is a triple star system in the southern constellation of Centaurus. It consists of three stars: Rigil Kentaurus (Alpha Centauri A), Toliman (B) and Proxima Centauri (C).[13] Proxima Centauri is the closest star to the Sun at 4.2465 light-years (1.3020 pc). Alpha Centauri A and B are Sun-like ...
2 天前 · The ocean is the body of salt water that covers ~70.8% of the Earth. [8] In English, the term ocean also refers to any of the large bodies of water into which the world ocean is conventionally divided. [9] Distinct names are used to identify five different areas of the ocean: Pacific, Atlantic, Indian, Antarctic/Southern, and Arctic.
