Wikipedia:Main Page history/2020 August 21
From today's featured articleTropical Storm Ileana was a small tropical cyclone that affected western Mexico in early August 2018. The eleventh tropical cyclone and ninth named storm of the 2018 Pacific hurricane season, Ileana originated from a tropical wave that left the west coast of Africa and traveled across the Atlantic Ocean before crossing into the eastern Pacific Ocean early on August 4. The system began to strengthen on August 5, becoming Tropical Storm Ileana. On August 6, it began to develop an eyewall structure as it reached its peak intensity with winds of 65 mph (100 km/h) and a pressure of 998 mbar (29.47 inHg). The storm became intertwined with Hurricane John; the circulation of John disrupted Ileana before absorbing it on August 7. Paralleling the coast of Mexico for much of its existence, Ileana killed four people in Guerrero and four others in Chiapas. There was flooding in the Mexican states of Oaxaca, Guerrero, and Estado de México. (Full article...)
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Claudio Monteverdi (1567–1643) composed ten operas, a genre that emerged while he was a court musician in Mantua. His first opera, L'Orfeo, premiered in 1607 and became the first opera still in today's repertoire. The music for seven of his opera projects is mostly lost. Four of these were completed and performed, while he abandoned the others at some point. Libretti have survived for some of them, as well as fragments of the music for L'Arianna and Proserpina rapita. Monteverdi composed operas for a theatre in Venice when he was master of music at San Marco, including Il ritorno d'Ulisse in patria in 1640 and L'incoronazione di Poppea in 1643, both of which also remain in the repertoire. (Full list...)
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This is an animation showing rotation period (a geosynchronous orbit). An object in such an orbit will appear to occupy a fixed position in the sky. Some 300 kilometres (190 miles) farther away is the graveyard orbit (brown), used for satellites at the end of their operational lives. Nearer to the Earth are the orbits of navigational satellites, such as Galileo (turquoise), BeiDou (beige), GPS (blue) and GLONASS (red), in medium Earth orbits. Much closer to the planet, and within the inner Van Allen belt, are satellites in low Earth orbit, such as the Iridium satellite constellation (purple), the Hubble Space Telescope (green) and the International Space Station (magenta).
Animation credit: Cmglee
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