Our Sun is a G-type main sequence star and is roughly halfway through its main sequence lifetime.

The Sun is classified as a G2V star, meaning it's a yellow dwarf, a relatively average-sized and average-temperature main sequence star. It has been fusing hydrogen into helium for approximately 4.6 billion years and is expected to continue this process for another 5 to 6 billion years. This places it firmly in the middle of its main sequence phase, providing consistent energy output that has allowed life to evolve and thrive on Earth for billions of years.