What Is The Brightest Star In The Known Universe

This is a list of stars down to magnitude 2 50 as determined by their maximum total or combined visual magnitudes as viewed from earth although several of the brightest stars are known binary or multiple star systems and are relatively close to earth they appear to the naked eye as single stars.

The brightest star other than a supernova in absolute terms is more difficult to say. It may also interest the reader to know that the sun is more luminous than approximately 95 of all known stars in the local neighbourhood out to say a few hundred light years due to enormous numbers of somewhat less massive stars that are cooler and often much less luminous. The bright star sirius. The list below combines adds the magnitudes of bright individual components.

At 315 solar masses it is nearly double the mass of interstellar titans like eta carinae the pistol star the peony star among others. Capella which is the latin word for the term little she goat is one component of a multiple star system the brightest of which is a yellow giant known as aa is of 2 466 solar masses and 80 times as luminous as the sun. That isn t the question either the brightest star known in the universe is r136a1 a blue hyper giant which is not only the most massive star known at 265 solar masses but the brightest. Also known as alhajoth alpha aurigae hr 1708 hd 34029.

Dense starfield around the red supergiant star stephenson 2 18 brightest star in the image as seen from the 2mass astronomical survey. Sirius also known as the dog star or sirius a is the brightest star in earth s night sky. Stephenson 2 18 is among the largest known stars extremes which are considered authoritative and not likely to change at any point with new information are recorded in white while extremes that could change with new information or discoveries are recorded in. We don t know exactly but one star in the lmc comes pretty close to the theoretical limits.

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If placed in the center of the solar system i. 7 rigel constellation. The last stars in the list are familiar nearby stars put there for comparison and not among the most luminous known. The brightest star known to be a single star is the so called pistol star located in the pistol nebula in sagittarius.

It might be lbv 1806 20 but some astronomers now think that star is actually two stars. At 1 708 solar radii it is currently an m4ia supergiant. Malcolm park getty images sirius also known as the dog star is the brightest star in the night sky its name comes from the greek word for scorching many early cultures had names for it and it had special meanings in terms of rituals and the deities they saw in the sky.