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Binary star. The well-known binary star Sirius, seen here in a Hubble photograph from 2005, with Sirius A in the center, and white dwarf, Sirius B, to the left bottom from it. A binary star or binary star system is a system of two stars that are gravitationally bound to and in orbit around each other. Binary stars in the night sky that are seen ...
On the Heavens. On the Heavens (Greek: Περὶ οὐρανοῦ; Latin: De Caelo or De Caelo et Mundo) is Aristotle 's chief cosmological treatise: written in 350 BC, [citation needed] it contains his astronomical theory and his ideas on the concrete workings of the terrestrial world. It should not be confused with the spurious work On the ...
An operating system ( OS) is system software that manages computer hardware and software resources, and provides common services for computer programs . Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, peripherals, and ...
At the Cerro Paranal Observatory, a laser beam is used to create an artificial star to tune the Very Large Telescope (VLT). The search for exoplanets on which extraterrestrial civilizations could be found is one of the many missions of the VLT. The Kardashev scale ( Russian: Шкала́ Кардашёва, romanized : Shkalá Kardashova) is a ...
Relative masses of the Solar planets. Jupiter at 71% of the total and Saturn at 21% dominate the system. Relative masses of the solid bodies of the Solar System. Earth at 48% and Venus at 39% dominate. Bodies less massive than Pluto are not visible at this scale. Relative masses of the rounded moons of the Solar System.
Giordano Bruno ( / dʒɔːrˈdɑːnoʊ ˈbruːnoʊ /; Italian: [dʒorˈdaːno ˈbruːno]; Latin: Iordanus Brunus Nolanus; born Filippo Bruno, January or February 1548 – 17 February 1600) was an Italian philosopher, poet, cosmological theorist and esotericist. [1] He is known for his cosmological theories, which conceptually extended to ...
The Galileo affair ( Italian: il processo a Galileo Galilei) began around 1610 [1] and culminated with the trial and condemnation of Galileo Galilei by the Roman Catholic Inquisition in 1633. Galileo was prosecuted for his support of heliocentrism, the astronomical model in which the Earth and planets revolve around the Sun at the centre of the ...
Nice model. The Nice ( / ˈniːs /) model is a scenario for the dynamical evolution of the Solar System. It is named for the location of the Côte d'Azur Observatory —where it was initially developed in 2005—in Nice, France. [1] [2] [3] It proposes the migration of the giant planets from an initial compact configuration into their present ...