![]() Most of the planets detected thus far have been more massive than Jupiter this is likely because current detection techniques make more massive planets easier to detect. Some of the star systems have multiple planets orbiting the central star. By the year 2014, more than 1500 extra-solar planets have been confirmed, most within about 300 light-years of Earth. Like the Milky Way, the nearby galaxy NGC 1300. The first extra-solar planets were discovered in 1992 orbiting a star called PSR B1257+12, which is 980 light-years away from Earth. M101, the other potential Milky Way match, is known as the Pinwheel Galaxy although it lacks the bright bar of NGC 1300, it boasts more spiral arms. These are planets that orbit stars other than the Sun. The new galaxy seems to be associated with the group containing IC342 and the Maffei galaxies, and a subsequent optical image suggests that it is of type SBb. Since one light year is about 9.5 x 10 12 km, so the diameter of the Milky Way galaxy is about 9.5 x 10. Credit: South African Large Telescope.Įxtremely exciting to many astronomers, as well as members of the public, has been the discovery of extra-solar planets. NASA estimates the galaxy at 100,000 light-years across. Instead of looking at these, we are going to focus on the major spiral galaxies closest to the Milky Way. The closest galaxies to Earth are mostly dwarf galaxies and satellites of the Milky Way. ![]() For our Milky Way Galaxy, signs of kinked spiral arms were also noticed (e.g., Taylor and Cordes, 1993 Hou and Han, 2014), as some of the spiral arms cannot be well fitted by pure logarithmic. (right) The globular cluster 47 Tucanae is about 15,000 light-years from Earth, and 120 light-years across. The Five Closest Spiral Galaxies - WorldAtlas The Five Closest Spiral Galaxies There are many different types of galaxies. (2013) found that the perturbers can produce segments, and these segments are joined at kinks to form a spiral arm. \): The Pleiades star cluster, also known as the Seven Sisters, or in Japanese as Subaru, is 440 light-years from Earth.
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