Our sun is a "main sequence star" means it is in a phase where its burning its hydrogen, after all hydrogen is burnt and core is all helium, it moves to next stage of Red giant star and kills all planets around it including earth. We have 1 billion years till we reach there.
Is 1 billion or 1000 million years enough ? To give your some perspective, after homo sapiens evolved, humans didn't discover fire for 2 million years. After fire, in 200k years we move to 0 year (current start of AD or BC years). Out of past 2000, just 500 yrs ago Galileo discovered that earth revolves around sun. Earliest radio signals in space were just 70 - 80 yrs ago.
You can say, we have just started. We have plenty of time, we might reach out of solar system. Will democracy and politics allow us to reach there, that's another debate.
bluesmiley05 t1_iw82nxi wrote
Reply to Will mankind ever travel outside our solar system? by savol_
Our sun is a "main sequence star" means it is in a phase where its burning its hydrogen, after all hydrogen is burnt and core is all helium, it moves to next stage of Red giant star and kills all planets around it including earth. We have 1 billion years till we reach there.
Is 1 billion or 1000 million years enough ? To give your some perspective, after homo sapiens evolved, humans didn't discover fire for 2 million years. After fire, in 200k years we move to 0 year (current start of AD or BC years). Out of past 2000, just 500 yrs ago Galileo discovered that earth revolves around sun. Earliest radio signals in space were just 70 - 80 yrs ago.
You can say, we have just started. We have plenty of time, we might reach out of solar system. Will democracy and politics allow us to reach there, that's another debate.