Compared to the entire universe, even to those supermassive celestial bodies, humanity and Earth were so tiny as to be negligible.
Earth's radius was 6,000 kilometers, while the Sun's radius was roughly 700,000 kilometers. Yet UY Scuti's radius was 1,708 ± 192 times that of the Sun!
UY Scuti could hold 4.5 billion Suns, or 20 quadrillion Earths.
Hearing Shen Feng's words, Jingwei curled her lip and said:
"'Different lands nurture different people' applies to humans. If the larger the star in a stellar system, the larger the life forms there, then how huge would the creatures around something like the galactic-center black hole have to be? Besides, UY Scuti is now a red supergiant. Its interior is extremely unstable—the more it expands, the faster it dies. It might explode into a supernova very soon..."
After a pause, Jingwei further refined the morphological simulation of the alien behemoth and continued:
"Once the largest observable red supergiant explodes into a supernova, the energy it releases definitely won't be something ordinary life forms can withstand. The planets around it would be melted and blown into cosmic dust. No matter what lived there, it would be difficult for anything to survive."
When a star passed through the old age of its red giant phase and reached the end of its life, it would undergo a massive explosion, hurling most or nearly all of its matter outward at speeds that could reach one-tenth the speed of light, while radiating shockwaves into the surrounding interstellar matter.
Such a frenzied eruption—a supernova explosion—was enough to illuminate the entire galaxy containing the star.
Because they released more energy at a faster rate, red supergiants had shorter lifespans than red giants. According to current theories, UY Scuti would explode into a supernova within several million to several tens