Thanks to the Gaia space telescope, astronomers can now identify stars similar to our Sun
The sun, whose age is about 4.57billion years, is currently in a comfortable middle age and fairly stable. This will not always be the case. As the hydrogen fuel in the star's core runs out, someday it will swell up and turn into a red giant, lowering the temperature of its surface in the process.
Scientists have learned that the sun will reach its maximumtemperature around the age of 8 billion years, then cool and increase in size, becoming a red giant at an age of about 10-11 billion years. It will eventually become a dim white dwarf.
Thus, for the next approximately 3.5 billion years, we have nothing to fear (at least when it comes to the Sun).