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The Solar System is about 4.6 billion years old, and I guess this is about the age of our nearest star, Sol or as we call it the Sun. The Sun's color is white,(though it is classed as yellow star) although from the surface of the Earth it may appear yellow because of atmospheric scattering. Its stellar classification, based on spectral class, is G2V, and is informally designated a yellow star, because the majority of its radiation is in the yellow-green portion of the visible spectrum.
Sol is about halfway through its life as it burns hydrogen fuel in thermonuclear reactions creating the energy we all need to live (we being all living things on the planet Earth).
The Sun does not have enough mass to explode as a supernova. Instead, in about 5 billion years, it will enter a red giant phase, its outer layers expanding as the hydrogen fuel in the core is consumed and the core contracts and heats up. Helium fusion will begin when the core temperature reaches around 100 million kelvins and will produce carbon, entering the asymptotic giant branch phase. At this time the Earth will have been burnt to the point where nothing could live on this remote rock in space.
reference: wikipedia
Sol is about halfway through its life as it burns hydrogen fuel in thermonuclear reactions creating the energy we all need to live (we being all living things on the planet Earth).
The Sun does not have enough mass to explode as a supernova. Instead, in about 5 billion years, it will enter a red giant phase, its outer layers expanding as the hydrogen fuel in the core is consumed and the core contracts and heats up. Helium fusion will begin when the core temperature reaches around 100 million kelvins and will produce carbon, entering the asymptotic giant branch phase. At this time the Earth will have been burnt to the point where nothing could live on this remote rock in space.
reference: wikipedia