Earthed

what is the lifespan of a planet if it were to die of natural causes?

bare with my curiousity but the earth will die because of us, something slamming into it, or the sun dying itself.



but for arguement sake lets say the sun never dies and we dont kill our own planet, nothing hits earth, no galaxies collide with ours or any other ways to kill off the planet.



does a planet life forever? or would it somehow die on its own of its own natural causes?



our planet can only life as long as our sun lives, but if the sun were to remain the same forever what would be the fate of earths lifespan?

Public Comments

1. they all die by natural causes....planets dont get cancer. it depends on the amount of energy they have
2. no human on earth will know.........perhaps a new form of lives that's can accommodate to the new habitat will eventually arise but definitely not known as 'human'. But of course the planet will still exist.....forever.
3. It has about 5 billion years left until the sun goes into the red giant stage. If you used your example with a constant sun, it would be hundreds of billions of years. The radioactivity in the core would die down long before that and geological activity would stop. The lack of a mechanism for recycling CO2, water and other material might seriously degrade the environment. The lack of a magnetic field might allow the solar wind to reduce the atmosphere. It isn't exactly the planet dying but it could be unsuitable for life in a few billion years. I doubt anybody knows how much nuclear material is in the core so nobody could say how long it would geologically active. It would likely be several billion years in the future at any rate.
4. The force of evolution ensures that any traits that improve survivability of a species will proliferate, providing a mechanism that runs exactly counter to entropy. The concept of natural death applies only to individual organisms, not a species. Species can die off, but only because their particular niche changes. But some other species will always take their place, one that is better able to survive. If there were no natural disasters, then I can't think of any force or natural law that would cause life itself to end.
5. Planets are not living, changing organisms. Planets don't evolve the way stars do, so planets can't die on its own. To "kill" a planet you would have to destroy it somehow.
   
   
   
   But life on a planet can die off completely, leaving the planet totally sterile and lifeless.
6. Its a big round rock. If you dont touch a rock or smash it with something, it keeps on going in space.
   
   
   
   Forever.