dark-2
Explanation
This comic addresses cosmological "doomsday scenarios" about the ultimate fate of the universe. The first panels describe how the universe will likely end in heat death, where matter is evenly distributed and no work (and thus no life) is possible. The comic notes that physicists tend to discuss this calmly while regular people tend to "yell in bars."
The comic then introduces a philosopher who calls this "a neat question but also absolutely belly-achingly... absurd" before pivoting to discuss "candidate theories of dark matter" that suggest the universe's own gravity could interact with itself to cause reality to "decay." The comic shows a series of equations and then a gleeful scientist declaring that these theories suggest "the ground beneath us, and any surrounding reality, could at any moment just vanish."
The final panel, labeled "Earlier," shows a physicist presenting a "novel physics-based method to tell the granter of the universe to go fuck himself forever" to an audience told to "brace yourself" for a "simulation." The joke is that physicists studying the end of the universe are not soberly contemplating humanity's doom -- they are gleefully constructing elaborate theoretical frameworks that essentially amount to a cosmic middle finger. The comic satirizes how theoretical physics can simultaneously address the most profound existential questions while being pursued with the enthusiasm of someone who just wants to blow things up. It also plays on the simulation hypothesis, suggesting that if we live in a simulation, figuring out how the universe destroys itself is essentially finding a way to insult whoever is running it.