How old is the Sun ?

The Sun is roughly 4.5 billion years old now.

 Solar Life Time

At Birth = The Sun was born as a star in a nebula 4.5 billion years ago.

– The Sun will keep increasing in temperature, brightness and size in the ages ahead.

At 7 billion years old = The Sun will start to change and will become bigger and cooler.

At 10 billion years old = The Sun will turn into a red giant, it will expand to consume the Earth’s orbit. 

Sun      solarinterior

 

 

 

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