The size of the sun is 1.3 million times that of the earth, the diameter of the earth is about 1 * 10 to the seventh power, and the width of the Milky way is about 100000 light-years The calculation shows that the band sample is only a tiny member of the galaxy

The size of the sun is 1.3 million times that of the earth, the diameter of the earth is about 1 * 10 to the seventh power, and the width of the Milky way is about 100000 light-years The calculation shows that the band sample is only a tiny member of the galaxy

The distance of 100000 light-years is 100000 years * 365 days * 24 hours * 60 minutes * 60 seconds * 300000 kilometers (light speed / second) = 3942 trillion kilometers, while the diameter of the earth is 100 million kilometers, and the diameter of the sun is about 1.3 million cubic kilometers (volume to diameter), that is, its diameter is about 100 times the diameter of the earth, that is, 1 billion kilometers