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Kepler-186 is a main-sequence M 1-type dwarf star, located 177.5 parsecs (579 light years) away in the constellation of Cygnus. The star is slightly cooler than the sun, with roughly half its metallicity.
Kepler-62 is a K-type main sequence star cooler and smaller than the Sun, located roughly 980 light-years (300 parsecs) from Earth in the constellation Lyra. It resides within the field of vision of the Kepler spacecraft, the satellite that NASA 's Kepler Mission used to detect planets that may be transiting their stars.
The Great Debate, also called the Shapley–Curtis Debate, was held on 26 April 1920 at the Smithsonian Museum of Natural History, between the astronomers Harlow Shapley and Heber Curtis. It concerned the nature of so-called spiral nebulae and the size of the universe. Shapley believed that these nebulae were relatively small and lay within the outskirts of the Milky Way galaxy (then thought ...
Alpha Trianguli Australis, known as Atria, is a second-magnitude orange giant and the brightest star in the constellation, as well as the 42nd-brightest star in the night sky. Completing the triangle are the two white main sequence stars Beta and Gamma Trianguli Australis. Although the constellation lies in the Milky Way and contains many stars, deep-sky objects are not prominent. Notable ...
Globular clusters are found in nearly all galaxies. In spiral galaxies like the Milky Way, they are mostly found in the outer spheroidal part of the galaxy – the galactic halo. They are the largest and most massive type of star cluster, tending to be older, denser, and composed of lower abundances of heavy elements than open clusters, which are generally found in the disks of spiral galaxies ...
Kepler-69c [3] [5] [6] (also known by its Kepler Object of Interest designation KOI-172.02) [2] [7] is a confirmed super-Earth extrasolar planet, likely rocky, orbiting the Sun -like star Kepler-69, the outermore of two such planets discovered by NASA 's Kepler spacecraft.
Its brightest star, Altair, is one vertex of the Summer Triangle asterism. The constellation is best seen in the northern summer, as it is located along the Milky Way. Because of this location, many clusters and nebulae are found within its borders, but they are dim and galaxies are few.
The Solar System is located in the Milky Way, a barred spiral galaxy with a diameter of about 100,000 light-years containing more than 100 billion stars. [268]