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Solar System models, especially mechanical models, called orreries, that illustrate the relative positions and motions of the planets and moons in the Solar System have been built for centuries. While they often showed relative sizes, these models were usually not built to scale.
Pioneer 10 was the first spacecraft to detect sodium and aluminum ions in the solar wind, as well as helium in the inner Solar System. [66] In November 1972, Pioneer 10 encountered Jupiter's enormous (compared to Earth) magnetosphere and would pass in and out of it and its heliosphere 17 times charting its interaction with the solar wind. [ 66 ]
Solar System – gravitationally bound system comprising the Sun and the objects that orbit it, either directly or indirectly. Of those objects that orbit the Sun directly, the largest eight are the planets (including Earth), with the remainder being significantly smaller objects, such as dwarf planets and small Solar System bodies.
It looks like it would be used as an illustration in a children's book about the solar system rather than a serious teaching tool. I'd rather have a diagram of the solar system that I can rely on to tell me something about it. Night Gyr (talk/Oy) 23:17, 26 August 2006 (UTC) Not promoted Raven4x4x 03:31, 27 August 2006 (UTC)
Diagram of the early Solar System's protoplanetary disk, out of which Earth and other Solar System bodies formed. The Solar System formed at least 4.568 billion years ago from the gravitational collapse of a region within a large molecular cloud. [b] This initial cloud was likely several light-years across and probably birthed several stars. [14]
Solar System Simulator (Interactive Applet) Archived 2018-12-13 at the Wayback Machine " Kepler and His Laws " in From Stargazers to Starships by David P. Stern (10 October 2016) "Kepler's Three Laws of Planetary Motion" on YouTube by Jens Puhle (Dec 27, 2023) – a video explaining and visualizing Kepler's three laws of planetary motion
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This is the boundary of the Solar System to interstellar space. The outermost region of the Solar System is the theorized Oort cloud, the source for long-period comets, extending to a radius of 2,000–200,000 AU. The closest star to the Solar System, Proxima Centauri, is 4.25 light-years (269,000 AU) away.