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.
Planetary civilization modify the weather at will, harness the power of a hurricane, or have cities on the oceans. Although they roam the heavens in rockets, their energy output is still largely confined to a planet. On the Kardashev scale, the next status is Type II civilization, where a civilization consumes all the energy that their star emits, or about 10 watts. Michio Kaku in a book "Physics of the Future" suggests that humans may attain stellar civilization status in a few thousand years. Planetary civilization A planetary civilization or global civilization is a civilization of Type I on Kardashev scale, with