If it were a hollow ball, more than a million Earths could fit inside it. If you want more information about the Sun, check out NASA’s Solar System Exploration Guide to the Sun, and here’s a link to the SOHO mission website, which has the latest images of the Sun. And if you wanted to try to fill the Sun with Earths, it would take 1.3 million Earths to equal the volume of the Sun.
What is bigger than the sun?
In about 5 billion years, scientists believe the Sun will begin to use up all the hydrogen in its core. Even missions such as NASA’s Solar Dynamics Observatory (SDO) and measurements of the inner planets on the face of the Sun do not tune the radius of the star as accurately as desired.
The Sun’s average radius is 432,450 miles (696,000 kilometers), making its diameter about 864,938 miles (1,392 million km). The Sun is classified as a G-type main sequence star, or G dwarf star, or more imprecisely, a yellow dwarf.
How many Earths can fit on the Sun?
If you divide the volume of the sun by the volume of the Earth, you get that approximately 1, 3 million Earths fit inside the sun. One million Earths is comparable to only 0.00033 the number of stars in the Milky Way (200-400 billion). During its first perihelion, the point in its elliptical orbit closest to the sun, the spacecraft approached the sun at about half the distance of the earth. The Sun is large enough that approximately 1.3 million Earths can fit inside it (if flattened) or if the Earths retain their spherical shape then 960,000 would fit.
These are caused by irregularities in the Sun’s magnetic field and can release enormous amounts of energy and particles, some of which reach us here on Earth. When the Sun begins to die, it will swell so much that it will engulf Mercury and Venus and perhaps even the Earth.