100 Mind-Blowing Dwarf Facts

5 billion Suns could fit in UY Scuti, one of the biggest known stars. Compared to the rest of the worlds of our Solar System – even colossal Jupiter – our Sun is pretty big. But it’s nothing compared to the biggest stars we know of red hypergiant stars that would positively dwarf our Sun if ever there was a cosmic ‘who’s the biggest star?’ contest. UY Scuti is one such stellar giant. It’s often referred to as the biggest known star in the Universe (although this can’t definitively be proven). But what calculations have revealed is that if UY Scuti were to replace our Sun, its outer edge would sit beyond the orbit of Jupiter. 5 billion Suns, 7 trillion Jupiters or 7 quadrillion Earths would fit inside UY Scuti! What’s more, UY Scuti is 300,000 times brighter than the Sun but is so far away you wouldn’t know this when observing it in our night sky.