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middle age
Life span should probably be reserved for things which have life - living things. It is only by analogy that we consider the life of the universe, the Sun, the half life of radionuclides, the Plate Tectonic cycle, and so on. In manufacturing we may consider the product life cycle, or the expected life of a product such as a cellphone, but these again are only by analogy.
I think ur a gay. when you die the sun will end on its life cycle! :D >>>Jushki
dubstep
the sun is a cool wave
It is approx half-way through its 10 billion year life cycle.
Well, evry life cycle starts with the sun. It depends. Like sun, monkey, banana, and a banana eats nothing.
The Sun is approximately halfway through its main-sequence process of evolution.
Life cycle of a sun like star. A sun like star will start out as a nebula to a protostar to a main sequence star to a red giant and into a white dwarf and will simply fade out.
The red giant.
yes
The Sun is halfway through it's life whereas Antares is nearing it's end.