Quais são as 10 maiores estrelas do universo conhecido?

OSR blog post

Você já deve ter se perguntado, em algum momento, quais são as maiores estrelas do universo. A verdade é que responder isso é um pouco complicado, então vamos nos ater ao universo conhecido pelo homem.

To define the largest stars in the universe, let’s first take their diameters into account. The stars of the universe are generally defined as gigantic spheres of pure plasma, large and luminous, held together by a simply incalculable gravity.

How the stars in the universe are born

In general, a star will always be born in a region that is called a “stellar nursery”. These nurseries usually appear in nebulae, which are colossal molecular clouds spread across the universe.

These clouds are so large that they can contain a multitude of unique galaxies within them. They are made up of gases and stardust and, due to the action of gravity, this dust and gases begin to come together, causing the cloud to end up losing part of its denser materials. Little by little, the dust gathers and gains density and heat, starting to rotate around itself, while attracting more and more material towards itself.

The star is truly born when the hydrogen atoms within this junction begin to heat up to very high temperatures, pressured by the stellar density, and thus end up fusing, becoming helium. This process is called nuclear fusion.

Top 10 biggest stars in the known universe

In tenth place, we have V766 Centauri, being the largest yellow one ever found. It is around 1300 times the size of our Sun, and was detected by the VLT telescope, installed in France. This is a star that is actually part of a system made up of two different stars.

NASA

In ninth place, MU Cephei is a gigantic red star, which is in the constellation Cepheus. Within the Milky Way, it is one of the largest and most luminous stars. Its color is a deep red, almost like blood.

NASA

In eighth place, KY Cygni, another red supergiant among the 10 largest stars in the universe. It is in the constellation Cygnus.

NASA

In seventh place, VY Canis. This star is a red hypergiant that is part of the Canis Major constellation, and has a diameter so large that almost 3,000 suns could fit in it.

NASA

In sixth place is KW Sagittarii, another red hypergiant. It is almost 10 thousand light years from our sun, and its diameter is slightly larger than that of VT Canis. It is in the constellation Sagittarius.

NASA

Next and fourth is RW Cephei, a red M-class star in the constellation Cepheus. Its radius is almost 1700 suns, and it is as large as the orbit that Jupiter makes around the sun.

NASA

The third, entering the podium of the biggest stars in the universe, is NML Cygni. This is a red hypergiant, considered one of the most luminous in known space.

NASA

Second place went to VV Cephei A, a star with a luminous spectrum, classified as MS, and which has almost 4000 suns in its diameter. If you put it in the center of our solar system, it would swallow most of the planets.

NASA

Finally, first we have WOH G64. This colossal red star is part of the Large Magellanic Cloud, and its estimated size is 2,985,000,000 kilometers. Simply scary!

NASA

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