About the Stages of Our Sun/What will happen to Earth
-The sun formed from a dark nebula. In all the formation process of the sun took 50 million years.
-The sun grew bigger inside of its "stellar nursery"
- Once the Proto-Sun was formed, the fusion of hydrogen and helium ignited the star and formed the core. The sun started shining in the night sky 4.5 billion years ago.
-The sun now takes up 99.8 percent of our solar system.
-1.1 billion years from now: The suns luminosity will increase by 10% and most of the atmosphere/clouds will dry out sending all water vapor into space. Over the next long period of time, all large land lifeforms will die (will humans find a way??!). Some marine animals living in oceans and large watersheds will survive.
-3.5 billion years from now:The sun will be 40% percent brighter than today. All of the oceans will be evaporated and conditions on Earth will be almost identical to Venus. The end of all life on earth.
-When the sun is 10.9 billion years old(hydrogen core exhaustion): At this point, the suns core will run out of hydrogen gas causing it to collapse. The sun will become slightly hotter and more dense.
-When the sun is 11.6 billion years old: It will enter the sub giant phase. The balance of gravity in the solar system will change because of the change in the sun's mass. This will cause the orbit of the planets to change.
-When the sun is 12.23 billion years old: It will become a Red Giant star. The helium core will be over 100 million degrees causing fusion to ignite the core again. The sun will resume recieving nuclear power. The outer atmosphere of the sun will increase a lot and will completely engulf Mercury.
-When the sun is 12.34 billion years old-the beginning of the end...: The core will be exhausted of helium causing the final stages of the sun........................................................................................................................
-At 12.36 billion years old-The sun will become a white dwarf, taking TRILLIONS of years to cool off, the final configuration of the solar system will be in order.
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