SOLAR SYSTEM

Detailed explanation-1: -But in about 5 billion years, the sun will run out of hydrogen. Our star is currently in the most stable phase of its life cycle and has been since the formation of our solar system, about 4.5 billion years ago. Once all the hydrogen gets used up, the sun will grow out of this stable phase.

Detailed explanation-2: -In this way the Sun consumes about 5 billion kilograms (5 million tons) of its nuclear hydrogen fuel every second. Yet the Sun is so large that it has been burning hydrogen at this rate ever since it formed some 5 billion years ago, and it will continue to burn steadily for at least another 4 billion years.

Detailed explanation-3: -Today, the Sun continues to fuse hydrogen atoms to make helium in its core. It fuses about 600 million tons of hydrogen every second, yielding 596 million tons of helium. The remaining four million tons of hydrogen are converted to energy, which makes the Sun shine.

Detailed explanation-4: -In about 5 billion years, our Sun will go through a similar aging process, possibly reaching 100 times its current diameter and becoming what’s known as a red giant. During that growth spurt, it will absorb Mercury, Venus, and possibly Earth.

Detailed explanation-5: -JOSHUA: Right, so the sun is about four and a half billion years old, and in about five billion years, it’s going to start to run out of its fuel. And then it will expand into what’s known as a red giant.

Detailed explanation-6: -The heat the Sun generates by its nuclear fusion of hydrogen into helium creates an outward pressure. In another 5 billion years, the Sun will have used up all the hydrogen in its core. This situation in a star is similar to a pressure cooker.