What is the highest possible mountain on an Earth-like world?

My friend is writing a book, and I volunteered to create a planet for him, one with an epic mountain extending far above the clouds.

The planet features lush jungles in the lower elevations and enormous towering mountains.

If possible, I would like to have a mountain so high it extends well into a typical stratosphere, and possibly even higher. Maybe we can even see the stars in the middle of the day.

Mars has Olympus Mons, at roughly ~ 77,000ft. But Mars may be too small to support life as we know it.

I am aware that there is a planet mass/mountain height correlation.

This brings me to my question:

What is the highest realistic mountain that I can make on a world that can sustain a breathable atmosphere and lush biosphere?

You may choose the mass and density of the planet as long as it is mentioned, and it can reasonably support life.

posted almost 7 years ago

Josh Belmont‭

1 reputation 9 0 0 0