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Whitmire and Matese speculated that Tyche's orbit would lie at approximately 500 times Neptune's distance, some 15,000 AU (2.2 × 10 12 km) from the Sun, a little less than one quarter of a light year. This is well within the Oort cloud, whose boundary is estimated to be beyond 50,000 AU.
A space station (or orbital station) is a spacecraft which remains in orbit and hosts humans for extended periods of time. It therefore is an artificial satellite featuring habitation facilities . The purpose of maintaining a space station varies depending on the program.
Matheson also states that there were cults to Tyche all over the Mediterranean. In Athens for instance, citizens would give tribute to Agathe Tyche alongside other gods. [17] Other gods seem to also be presented alongside Tyche including Dionysus at Corinth. [18] There was a Temple of Tyche that contained a figure called Nemesis-Tyche, an ...
The International Space Station marked a significant milestone on Monday: 20 years in orbit as humanity’s only inhabited outpost. What was once just three pressurized rooms – America’s Unity ...
On 12 September 2017, Tianzhou-1 performed the third and final docking and refuelling with Tiangong-2, with what is termed a fast docking which took 6.5 hours, rather than 2 days, to complete. [21] In June 2018, Tiangong-2 performed orbital maneuvers lowering the orbit to 292 × 297 kilometers, likely in preparation for deorbiting.
TOI-2257 b is an extremely eccentric (0.496) [2] exoplanet in or near the circumstellar habitable zone of the star TOI-2257, 188 light-years away. It is likely a sub-Neptune exoplanet, with a mass of 5.71 Mearth and a radius of 2.19 Rearth. [3]
Nemesis is a hypothetical red dwarf [1] or brown dwarf, [2] originally postulated in 1984 [3] to be orbiting the Sun at a distance of about 95,000 AU (1.5 light-years), [2] somewhat beyond the Oort cloud, to explain a perceived cycle of mass extinctions in the geological record, which seem to occur more often at intervals of 26 million years.
Mir-2 was a Soviet space station project which began in February 1976. [1] Some of the modules built for Mir-2 have been incorporated into the International Space Station (ISS). The project underwent many changes, but was always based on the DOS-8 base block space station core module, built as a back-up to the DOS-7 base block used in the Mir ...