Age of Cataclysm: I can light up the technology tree

【Technology + Disaster + Interstellar + Technology Tree】
In 2050 AD, the sun is affected by an unknown influence, and a helium flash is about to erupt!
Is the earth in danger?
It doesn't matter, I will take action!
The Three-Body Galaxy, the Proxima civilization is about to invade?
It doesn't matter, I will take action!
The dark universe, the disputes among advanced civilizations?
It doesn't matter, I will take action!
…
Starting from controlled nuclear fusion, the protagonist Lv Yongchang opens the interstellar era of human civilization!
Space shuttle, space elevator, energy weapon, antimatter preparation, grand unified theory, curvature navigation, two-dimensional fragments (two-dimensional foil)...
Methane ocean, mysterious species!
Liquid ammonia planet, flesh fusion!!
Dimensional creatures, dimensionality reduction attack!!!
What mysteries are worth exploring in the endless universe? !
Disputes among advanced civilizations, how should human civilization deal with it? !