The Starfall Tribulation: Apocalypse

One day in 2030, observatories around the world detected an asteroid that would collide with Earth in ten years. After countless complex calculations and simulations, they discovered that nothing could change the outcome: the asteroid would hit Earth.

For the first time in history, every country in the world united. Plans A, B, C, and more were prepared, one after another, all to help more people survive.

(The story has two endings. One is the ending readers hope for, in which humanity survives. The other sets the stage for another book I plan to write in the future: the complete extinction of humanity!!)