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The nearest star to the Sun. /ˌprɒksɪmə sɛnˈtɔːraɪ/ Eridanus: ε Eridani: Ran: IAU new 2015 Named after Rán, the Norse goddess of the sea. [26] // Eridanus: δ Eridani: Rana: Rana is Latin for 'frog'. Scorpius: HD 153950: Rapeto: IAU new 2019 Malagasy proposal; the name of a giant creature from folklore. // Leo: μ Leonis: Rasalas ...
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.
Liais, therefore, was "in a condition to deny, in the most positive manner, the passage of a planet over the sun at the time indicated". [18] Based on Lescarbault's "transit", Le Verrier computed Vulcan's orbit: it supposedly revolved about the Sun in a nearly circular orbit at a distance of 21 million kilometres (0.14 AU; 13,000,000 mi).
The brightest planets in the sky have been named from ancient times. The scientific names are taken from the names given by the Romans: Mercury, Venus, Mars, Jupiter, and Saturn. Our own planet is usually named in English as Earth, or the equivalent in the language being spoken (for instance, two astronomers speaking French would call it la ...
Closest star to the Sun with exactly six [29] exoplanets, and closest K-type main sequence star to the Sun with a multiplanetary system. One of the oldest stars with a multiplanetary system, although it is still more metal-rich than the Sun. None of the known planets is in the habitable zone. [30] 61 Virginis: Virgo: 13 h 18 m 24.31 s: −18 ...
The adjectival forms of the names of astronomical bodies are not always easily predictable. Attested adjectival forms of the larger bodies are listed below, along with the two small Martian moons; in some cases they are accompanied by their demonymic equivalents, which denote hypothetical inhabitants of these bodies.
The Sun is the star at the center of the Solar System.It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies.
[3] [16] [33] [46] Another variation on the rogue planet motif involves planets in the Solar System leaving their orbit around the Sun and becoming rogue planets drifting through space, as happens to the Earth by chance in Fritz Leiber's 1951 short story "A Pail of Air" and by design in Liu Cixin's 2000 short story "The Wandering Earth" and its ...