Stars and Exoplanets
Citation Needed14 Juni 2023

Stars and Exoplanets

A star is an astronomical object comprising a luminous spheroid of plasma held together by self-gravity. The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night, but their immense distances from Earth make them appear as fixed points of light. 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. Only about 4,000 of these stars are visible to the naked eye,[1] all within the Milky Way galaxy.

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The Endurance Expedition

The Endurance Expedition

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Enrique of Malacca

Enrique of Malacca

Enrique of Malacca (Spanish: Enrique de Malaca; Portuguese: Henrique de Malaca), was a native of the Malay Archipelago who became a slave of the Portuguese explorer Ferdinand Magellan in the 16th cent...

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Erik Jan Hanussen

Erik Jan Hanussen

Erik Jan Hanussen, born Hermann Steinschneider (2 June 1889, in Vienna – 25 March 1933, in Berlin), was an Austrian Jewish publicist, charlatan and clairvoyant performer. Acclaimed in his lifetime as ...

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Charles Ponzi

Charles Ponzi

Charles Ponzi, (born Carlo Pietro Giovanni Guglielmo Tebaldo Ponzi; March 3, 1882 – January 18, 1949), was an Italian swindler and con artist in the U.S. and Canada. His aliases include Charles Ponci,...

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The Challenger Disaster

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On January 28, 1986, the NASA shuttle orbiter mission STS-51-L and the tenth flight of Space Shuttle Challenger (OV-99) broke apart 73 seconds into its flight, killing all seven crew members, which co...

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The Ryugyong Hotel

The Ryugyong Hotel

The Ryugyong Hotel (Chosŏn'gŭl: 류경려관; sometimes anglicised as Ryu-Gyong Hotel or Yu-Kyung Hotel)[4] is an unfinished (although topped-out) 105-story, 330 metres (1,080 ft)-tall pyramid-shaped skyscrap...

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The Salem witch trials were a series of hearings and prosecutions of people accused of witchcraft in colonial Massachusetts between February 1692 and May 1693. The trials resulted in the executionsof ...

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