Did You Know?


1.3 million Earths could fit inside the sun, an average sized star.

1.3 million Earths could fit inside the sun, an average sized star.

The sun is the largest and the most massive object in the solar system, but it is just a medium-sized star among the hundreds of billions of stars in the Milky Way galaxy.

The total volume of the sun is 1.4 x 1027cubic meters. About 1.3 million Earths could fit inside the sun. The mass of the sun is 1.989 x 1030 kilograms, about 333,000 times the mass of the Earth. The sun contains 99.8 percent of the mass of the entire solar system, leading astronomers Imke de Pater and Jack J. Lissauer, authors of the textbook "Planetary Sciences," to refer to the solar system as "the sun plus some debris. 


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