# How many suns exist in the universe?

Our sun is truly a massive star. In our universe, there are billions upon billions of stars. Scientists estimate that the sun's core temperature is around 27 million degrees Fahrenheit and its surface temperature is over $9,{000^ \circ }F$ . There are many stars, but they all die at the same time, and new ones emerge. There are at least 300 billion stars in our own galaxy (the Milky Way). When stars are at the centre of a planetary system, such as when Earth and the other planets orbit our sun, we call them "Suns."
The sun, like most other stars, is primarily composed of hydrogen, followed by helium. The remaining matter is almost entirely made up of seven different elements: oxygen, carbon, neon, nitrogen, magnesium, iron, and silicon. In the sun, there are 98,000 helium atoms for every million hydrogen atoms, 850 oxygen atoms, 360 carbon atoms, 120 neon atoms, 110 nitrogen atoms, 40 magnesium atoms, 35 iron atoms, and 35 silicon atoms. Despite this, because hydrogen is the lightest of all elements, it only makes up about $72\%$ of the sun's mass, while helium makes up about $26\%$ .