Size comparison: Sun vs UY Scuti

Size comparison between the two stars, the Sun and UY Scuti.

UY Scuti is so big in this comparison, you can't see the sun. UY Scuti is very rich in metal, so it has a very short lifespan. It will end in a supernova in only a few million years.

Object	Sun	UY Scuti
Type	Star, yellow dwarf	Star, red supergiant
Age	4.6 billion years	5 million years
Diameter	1,392,684 km	2,376,511,200 km
Mean radius	696,342 km	1,188,255,600 km
Mass	1.98 × 1030 kg	1.7 × 1031 kg
Surface gravity	274.4 m/s²	-0.005 m/s²
Circumference	4.3 million km	7.46 billion km
Surface area	6.09 × 1012 km2	1.77 × 1019 km2
Volume	1.41 × 1018 km3	7 × 1027 km3
Atmosphere composition	73% hydrogen, 25% helium, 0.8% oxygen, 0.3% carbon	hydrogen, helium
Crust composition	73% hydrogen, 25% helium, 0.8% oxygen, 0.3% carbon	hydrogen, helium
Sun distance	0 km	9,500 light years
Luminosity	3.82 × 1026 W	1.3 × 1032 W
Photosphere temperature	5,772 K	3,365 K
Distance from the Milky Way center	27,200 light years	-
Spectral classification	G2V	M2-M4Ia-Iab
Right ascension	19h 4m 30s	18h 27m 36.53s
Declination	+63.87°	−12° 27′ 58.866″

Note: if one of the objects is not visible, it just means that it is too tiny to be displayed compared to the other one.