Approximately 4.5 billion years old, the sun – the central and largest object in our solar system – plays a huge role in supporting our planet. Of its jobs, the sun provides energy that is vital for ...

The Sun is mostly hydrogen and helium. Its core temperature is 27 million degrees Fahrenheit. The Sun is about 4.6 billion years old. It's a G-type main-sequence star. Key takeaways sponsored by The ...

The Sun's transition from the main sequence to the red giant phase is a gradual process, spanning approximately a billion years. This transition begins with a subgiant phase where core hydrogen fusion ...