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A Bussard ramjet, one of many possible methods that could serve to propel spacecraft. Interstellar travel is the hypothetical travel of spacecraft between star systems.Due to the vast distances between the Solar System and nearby stars, interstellar travel is not practicable with current propulsion technologies.
2I/Borisov comet, the second confirmed interstellar object, photographed in late-2019 beside a distant galaxy. An interstellar object is an astronomical object (such as an asteroid, a comet, or a rogue planet, but not a star or stellar remnant) in interstellar space that is not gravitationally bound to a star.
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A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. [1] [2] The word is derived from the Greek galaxias (γαλαξίας), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System.
Interstellar is a 2014 epic science fiction drama film directed by Christopher Nolan, who co-wrote the screenplay with his brother Jonathan.It stars Matthew McConaughey, Anne Hathaway, Jessica Chastain, Bill Irwin, Ellen Burstyn, and Michael Caine.
This is an overview of all existing partial lists on the meanings of minor planets (MoMP). Each table covers 100,000 minor planets, with each cell representing a specific partial list of 1,000 sequentially numbered bodies. Grayed out cells do not yet contain any citations for the corresponding number range. For an introduction, see § top.
This definition, which applies only to the Solar System (though exoplanets had been addressed in 2003), states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has "cleared its neighbourhood" of smaller objects approaching its orbit. Pluto fulfills the first two of these criteria, but not ...
Astrology, in its broadest sense, is the search for meaning in the sky. [25] Early evidence for humans making conscious attempts to measure, record, and predict seasonal changes by reference to astronomical cycles, appears as markings on bones and cave walls, which show that lunar cycles were being noted as early as 25,000 years ago. [ 26 ]