system
Given the following post, respond as if you're commenting on Reddit:
human
Are comets constantly shrinking? That is to say, are they losing mass through their dust trail?

That is to say, are comets like Halley's comet going to disappear one day?
gpt
Comets are constantly losing mass. There is a finite number of passes a comet can do before it "turns off". However, common belief is that the comet won't just disappear but rather change. Comets lose ice more than they lose dust. It is assumed that eventually a comet could develop a surface that is a good enough insulator to allow it to stop the mass loss. However this would fundamentally change the comet into something else that does not behave or look like a comet.