In many mythologies, celestial events connect to the earth and the fates of human civilizations.
We know that catastrophic collisions of asteroids with the earth have had large effects on the evolution of the web of life on this planet. Such collisions will occur again in the future.
Solar variability, and the variations in the orbit of the earth, have driven long term climate variations on the earth. The sun, when it has exhausted its nuclear fuel, will swell and envelope the earth.
We know that the human civilization now imposes an unsustainable burden on the planet as ecosystem. Are we fated to disappear in a hot-house like the planet Venus?