The three largest stars in the universe, how much bigger are they than the earth?

At present, VY Canis major is one of the largest stars known to mankind. If you sit on a 900-kilometer-per-hour passenger plane and circle Canis Canis six times, it will take 900 years to fly. It can easily accommodate about 3 billion suns.

Roberta M. Hu, a professor at the University of Minnesota, predicted that the diameter of Vicma Canis major is about 1800-2 100 times the radius of the sun. If VY is placed in the center of the solar system, its diameter exceeds Saturn's orbit (about 10 astronomical unit). It takes 8.5 hours for light to go around it, but it takes 14.5 seconds for light to go around the sun. However, with the deepening of observation, the diameter of the star was re-measured, and the current estimated size is 1420 solar diameters.

According to the three-dimensional formula of the sphere, its volume is 5.832 billion-9.29438+0 billion times that of the sun. If the earth is a sphere with a diameter of 1 cm, then the sun is a sphere with a diameter of 109 cm. According to the above ratio, the maximum diameter of Canis Canis predicted by VY is about 2.3km..

As can be seen from the above, the largest known planet is simply too big to imagine! And the sun, which is 1.3 million times larger than the earth, becomes insignificant in front of it, let alone a small earth! How many times is the big dog VY bigger than the earth? You can imagine for yourself!

Another strange gas planet named HAT-P-2b is located 440 light-years away in the constellation Hercules. Although the size of the planet HAT-P-2b is not much larger than Jupiter, the largest planet in our solar system, it is eight times heavier than Jupiter.

However, the mass of UY (UY Scuti) is about 6.5438+million times that of the earth. On the shield is a red Supergiant star. This star is the largest known star. This star is not only huge, but also has a radius of about 1 708 192 times that of the sun (the sun is10.3 million times that of the earth), and its brightness is extremely high. It is 340,000 times brighter than the sun and is one of the brightest stars.