Kepler's laws of planetary motion law" is what became the Second Law in the set of three; but Kepler did himself not privilege it in that way. Johannes Kepler published his first two laws about planetary motion in 1609, having found them by analyzing the astronomical observations of Tycho Brahe. Kepler's third law was published in 1619. Kepler had believed in the Copernican model of the solar system, which called for circular orbits, but he could not reconcile Brahe's highly precise observations with a circular fit to Mars' orbit—Mars coincidentally having the highest eccentricity of all planets except Mercury. His first law reflected this discovery.
Stars and planetary systems in fiction by 75 times in only 20 seconds. None of the items below pretend that UV Ceti is orbited by habitable worlds. Wolf 359 is a red dwarf of apparent magnitude 13.5 and thus can only be seen with a large telescope. However, at approximately 7.8 light-years away it is the fourth-closest stellar system to the Sun; only the Alpha Centauri system, Luhman 16 and Barnard's Star are known to be closer. Thus, even though it is suspected to be a flare star, it has attracted the attention of science fiction authors, filmmakers, and game developers. Stars and planetary systems in