![]() I also omitted objects not visible at all, such as Black Holes as well as groupings, such as galaxy clusters and superclusters. I'm calling this a 'short list' because each of the above objects come in a variety of sizes and styles, each with their own title. Galaxies: Massive structures which can house at least millions of each of the above celestial objects. Nebulae: Clouds of dust and gas in space which serve as the birthplace of stars, the remains of a dying star, or both Protostars: Stars which have not, and in some cases will not, accumulate enough matter to begin nuclear fusion processes Stars: Giant balls of gas which produce light, heat, and the rest of the electromagnetic spectrum within furnaces which use Hydrogen ( or other materials, based on their stage of life) in nuclear fusion reactions to create heavier elements Satellites/Moons: A smaller body which orbits a planet Comets: Masses composed of a mix of ice and rock, also left over from the creation of a given solar system but originating farther from the host star than asteroids Asteroids: Rocks of varying size left over from the creation of a given solar system This includes Pluto, Ceres, Sedna, and other objects mostly found in the Main Asteroid Belt or Kuiper Belt Dwarf Planets: These are objects that are almost planets, but fail to meet one of the defining characteristics. Planets: a celestial body orbiting a star that is massive enough to become round because of its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighboring region of planetesimals. ![]() The short list ( and I may forget something, if so please feel free to add to it) looks like this: It's not inconceivable that some of these may contain intelligent life.Assuming this is an Astronomy question, rather than an Astrology one, the term 'heavenly bodies' could refer to a number of different things. It is estimated that there could be some 50 billion exo-planets in our galaxy alone. What Elements are named after heavenly bodies Cerium, tellurium and uranium are named after. It consists of at least six planets - and two of them, apparently, have that magic ingredient necessary to support life - water. Heavenly bodies are the stars, planets, comets, asteroids, and moons of a solar system. Such planets are termed "exo-planets", signifying that they're not part of our solar system.Īfter that initial discovery, the flood gates seemed to open and many more were then spotted by astronomers.Īn interesting solar system is the one found around the star Gliese 581. In 1999, the first other solar system was discovered, with three Jupiter-style planets orbiting round the star Upsilon Andromedae. Better perhaps to pass them by and head for a far-away star. ![]() And, indeed, for most of the past century astronomers figured there was little enough to see: only one small icy planet, Pluto, and its oddball moon Charon. Vulcan - a planet once thought to orbit between Mercury and the Sun A spaceship exploring the outer reaches of our solar system could go a long time without seeing much. ![]() Phaeton - theorized to have disintegrated to form the Asteroid Belt.Planet V - thought to have once orbited between Mars and the Asteroid Belt.Planet X - another possible planet beyond the orbit of Neptune.Nemesis - a hypothetical star orbiting the Sun.None have been observed or proved to exist - but their details make interesting reading, nonetheless: There have been a few heavenly bodies speculated as existing within the solar system over the decades. No man made object has yet left the solar system, but the two Voyager probes will, one day, do so. The actual outer boundary of our solar system is considered to be where the solar wind meets the interstellar wind and is a distance of around two light years from the Sun. Here is a list of things that are found in the solar system, which you can click on to find more information: Since the Sun came into existance, the solar system has made 25 such orbits. It takes approximately 250 million years to do this and this period of time is known as a "galactic year". As the galaxy is spinning, we are actually orbiting the Galactic Centre. Our solar system is located on one of the outer spiral arms of the Milky Way Galaxy.
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