how many earths can fit on the sun

how many earths can fit on the sun

How Many Earths Can Fit on the Sun?

The Sun, our nearest star, is an enormous celestial body that has fascinated scientists and astronomers for centuries. Its immense size raises the question of how many Earths could fit inside it. In this article, we will explore this intriguing question from various perspectives, shedding light on the Sun’s dimensions, Earth’s size, and the calculations involved.

The Sun’s Dimensions

The Sun is a massive ball of hot gas, primarily composed of hydrogen and helium. It has a diameter of about 1.39 million kilometers (870,000 miles) and a circumference of approximately 4.37 million kilometers (2.72 million miles). These dimensions make the Sun about 109 times larger than Earth in terms of diameter.

Considering the Sun’s spherical shape, we can calculate its volume using the formula for the volume of a sphere: V = (4/3)πr^3, where r is the radius. With the Sun’s radius being approximately 696,340 kilometers (432,450 miles), its volume is estimated to be around 1.41 x 10^18 cubic kilometers (3.38 x 10^17 cubic miles).

Earth’s Size

Earth, on the other hand, is a rocky planet with a diameter of about 12,742 kilometers (7,918 miles) and a circumference of roughly 40,075 kilometers (24,901 miles). It is almost 109 times smaller in diameter compared to the Sun.

Using the same formula as before, we can calculate the volume of Earth, which is about 1.08 x 10^12 cubic kilometers (2.59 x 10^11 cubic miles). Comparing these volumes, we can see that the Sun is about 1.3 million times larger than Earth in terms of volume.

Calculating Earths Inside the Sun

To determine how many Earths can fit inside the Sun, we need to divide the volume of the Sun by the volume of Earth. By doing this calculation, we find that approximately 1.3 million Earths could fit inside the Sun.

Considering Mass and Density

While the volume comparison provides an estimate of the number of Earths, it is essential to consider other factors such as mass and density. The Sun’s mass is about 333,000 times that of Earth, and its average density is about 1.41 times that of Earth.

When taking these factors into account, we can conclude that the number of Earths that could fit inside the Sun would be slightly lower than the volume-based estimate. However, the difference is relatively small, and the estimate of 1.3 million Earths still stands as a rough approximation.

Implications and Significance

Understanding the size comparison between the Sun and Earth helps us appreciate the vastness of our star and the insignificance of our planet in comparison. It highlights the immense energy and gravitational forces at play within the Sun, shaping our solar system and sustaining life on Earth.


In conclusion, if we were to stack Earths inside the Sun, approximately 1.3 million Earths could fit within its massive volume. This estimation provides a perspective on the Sun’s overwhelming size and emphasizes the uniqueness and fragility of our home planet.

how many earths can fit on the sun

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