Nedavno mi zatrebalo nesto o zvijezdama a nisam se dugo bavio citanjem te tematike i bacim se malo na trazenje
Nisam znao da se pojavio novi div Scuti ili UY Scuti oficijalno.
Znam da je do sada rekord drzala Canis Majoris (VY) a Scuti nadmasuje cak i nju po velicini radiusa, koji iznosi 1708 solar radii i za toliko je puta i veca od Sunca, bar po procjeni koju su astronomi iz Cilea izvrsili 2012. Solar radii(1.188×10(na devetu) kilometres; 7.94 astronomical units)
Udaljenost od zemlje je oko 9500 svjetlosnih godina.
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German astronomers originally discovered UY Scuti at the Bonn Observatory in 1860, but it wasn’t until astronomers observed UY Scuti through the Very Large Telescope in Chile’s Atacama Desert in 2012 that the star’s true size became well documented. Following this discovery, UY Scuti was officially named the largest known star in the galaxy, surpassing previous record holders such as Betelgeuse, VY Canis Majoris, and NML Cygni.
While there are stars that are brighter and denser than UY Scuti, it has the largest overall size of any star currently known, with a radius of 1,708 ± 192 R☉. That figure amounts to somewhere between 1,054,378,000 and 1,321,450,000 miles in size, which is about 1,700 times larger than our Sun’s radius and 21 billion times the volume. Wrapping one’s head around such number can be difficult, so let’s break this down a bit.
From our point of view, Earth is pretty big compared to the size of a single human. But compared to even some of our close neighbors, our home is incredibly tiny. Let’s imagine for a moment that the Earth were an 8-inch diameter ball. At that scale, the Sun would be about 73 feet in diameter, which is a few feet more than the height of the White House. Our enormous, distant friend, UY Scuti, would be 125,000 feet in diameter, which is just a smidge under 24 miles. Remember that crazy Redbull-sponsored stunt a few years ago performed by Felix Baumgartner, who jumped from the outermost limit of Earth’s atmosphere back to the surface? That was 24 miles in the air. Now imagine a sphere that large. That’s how big UY Scuti is.
So, what would happen if UY Scuti were to swap positions with our Sun? The Star would engulf the the entirety of Jupiter’s orbit, swallowing the Sun, the first five planets of our solar system, and the asteroid belt without so much as a belch. Some speculate the star may be even larger, enough to extend beyond the orbit of Saturn. Not only that, but the UY Scuti’s gravity would gobble up the larger planet and distant planetoids of our solar system like a interstellar Pac-Man, and whatever remained unconsumed would take thousands of years to complete a single orbital rotation around the luminescent giant.
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