Some of them are barely visible, others shine so brightly that they come out when the sky’s still blue! Alpha Centauri (in yellow, above) is one of the brightest stars in the night sky, coming in at #4 on the list.
WR 102ka is located where the bright white spot near the center of the image is, and it weighs in at a whopping 175 times the mass of the Sun! Deep inside the Large Magellanic Cloud, 160,000 light years away, the star R136a1 has just shattered all of the records.
And since it is the biggest star we’ve ever found, would you like to see an illustration of just how big it is? In terms of energy output, this one star, R136a1, radiates more than 10 million times faster than our Sun. So be aware that behemoths like this are out there, burning through Hydrogen with the fury of millions of Suns, and be very, very happy about the fact that they’re as far away from us as they are!
Second, in your third image above, in addition to the M through O type stars illustrated next there are also two objects labeled T & L.
How do we know R136a isn’t a binary of two extremely large, but not model-destroying, stars? If the lifetime of this thing is only 10,000 years, does it ever really qualify as a star in the sense that most people would recognise? I think I read that when stars start fusing, the outward radiation pressure prevents the star collecting more hydrogen. VY Canis Majoris is not fesable it is that big our sun is a like the size of an atom compared it google search it and u will know wat i mean.
Why are the star look different shape from the stars look if you seen the R136a1 that is not a star ship it looks circle!!!
The energy a planet receives from a star diminishes with the square of the distance from that star.
It’s similar to our Sun, only a little bit bigger and brighter, and has roughly the same color.
Known as Beta Centauri, it’s the 10th brightest star in the night sky, appearing about 70% as bright as its yellow neighbor. Despite being over 100 times farther away and having much more fuel to burn, a B-type star can appear incredibly bright and short-lived, because it burns its fuel over 10,000 times faster than the Sun does!
Even though Alnitak has a total lifetime of just one or two million years or so, we can find even brighter, heavier, shorter-lived ones.


At around 25,000 light years away, WR 102ka has an incredibly interesting property: it’s already dead!
At the cool end, L and T are red and brown dwarfs respectively, the brown dwarfs having their peak emission in the infra-red and displaying methane in their spectra.
So initially heavy elements are confined to regions that are proximate to supernova eruptions, but over a long period of time they would tend to be better scattered throughout a galaxy.
You are probably right that it never settles down to an equilibrium size, which is part of the reason it has blown off so much mass.
If the star puts out 10 million times as much energy as the Sun, then for a planet to receive the same amount of energy as Earth, it should be 1 AU x sqrt(10,000,000) distance from the star.
And Tyrell from Blade Runner got it right: the brighter, hotter, bluer stars burn through their fuel faster!
If we look near the center of the galaxy, we can find star WR 102ka, located in the Peony Nebula below. A star that massive will live less than 25,000 years, and since the light we’re seeing now left that star 25,000 years ago, it’s already burned up all of its fuel, and has likely died in a tremendous supernova explosion! A star like this is unheard of, and many were dubious that a star like this could have even existed!
If you replaced the Sun with this star, you’d be able to place Earth nearly an entire light-year away from the Sun, and life would still survive.
Also, the t=0 point for a star comes after (or near the end of) the coalescence phase, since you have to have compressed a core to the necessary region of temperature-pressure space to ignite fusion.
While that yellow star is 4.4 light years away, Beta Centauri, the blue one, is 530 light years away, or over 100 times as far away!
With a lifetime under 10,000 years, we’re lucky to have caught a glimpse of it at all!
Then the heavyweights burn more of their fuel during their lifetime (I’m not sure this is true, perhaps the core explodes too early to allow this), the heavyweights gain another advantage.
So I suspect the press reported lifetimes of a million or two million years is closer to the truth.



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