Ever wondered what will happen to our Sun billions of years from now? It's a cosmic tale of transformation! In approximately 5 billion years, our Sun will begin its transition off the main sequence, exhausting the hydrogen fuel in its core.
Prepare for a dramatic expansion! The Sun will swell into a red giant, engulfing Mercury and Venus, and possibly even Earth. Its surface will cool, giving it a reddish hue.
But this fiery phase is temporary. After burning through its helium, the Sun, lacking the mass to become a supernova, will shed its outer layers, forming a beautiful planetary nebula. At the nebula's center, a white dwarf will remain – a dense, hot remnant gradually cooling and fading over trillions of years. This white dwarf, no longer producing energy, will eventually become a black dwarf, a cold, dark ember in the vast cosmic ocean. So, while our Sun's end is far in the future, it's a fascinating glimpse into the life cycle of a star!