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7 giu 2024 · SpaceX’s Starlink Satellite Communications (SATCOM) system dramatically entered the news, and the public consciousness, on 26th February 2022. Two days before, Russia’s President Vladimir Putin had ordered his second invasion of Ukraine.
14 giu 2024 · Lists that rank the greatest performers to hit the large and small screens. Over 2K fans have voted on the 80+ people on Best Actors Under 25, Ranked. Current Top 3: Tenzing Norgay Trainor, Ethan Cutkosky, Malachi Barton.
14 giu 2024 · Wolf–Rayet stars, often abbreviated as WR stars, are a rare heterogeneous set of stars with unusual spectra showing prominent broad emission lines of ionised helium and highly ionised nitrogen or carbon. The spectra indicate very high surface enhancement of heavy elements, depletion of hydrogen, and strong stellar winds.
15 giu 2024 · Photographers from China were among the top prize winners at the 14th Astronomy Photographer of the Year competition, organized by the Royal Observatory Greenwich, in London.
1 giorno fa · The following list include the largest stars by their apparent size (angular diameter) as seen from Earth. The unit of measurement is the milliarcsecond (mas), equivalent to 10 × 10 −3 arcseconds. Stars with angular diameters larger than 13 milliarcseconds are included.
5 giorni fa · The most prominent stars have been categorised into constellations and asterisms, and many of the brightest stars have proper names. Astronomers have assembled star catalogues that identify the known stars and provide standardized stellar designations. The observable universe contains an estimated 1022 to 1024 stars.
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