I stopped paying too much attention when Tyson referred to Comets as dirty snowballs when we’ve known for almost ten years now, after numerous fly-bys, a couple of probe touch-downs, and the Deep Impact Space Mission where we Rammed Comet Tempel 1 with a 600 pound hunk of copper, that there is no ice or water on any comet we’ve encountered, and, except for their orbit, they are essentially indistinguishable from any other asteroid. If he insists on sticking to outdated, falsified science on that, then how much of the rest is worth watching? How much credibility can I give to ANYTHING else the man says? I decided very little.
Pretty sure your information is incorrect regarding ice and water in comets.