[seastay]

There should no missions to land on comets until NASA comes to the reality that their dirty snowball ice rock comet carrying the primordial soup of life to earth has yet to show any evidence .. Every flyby has shown comets to be burnt dry rocks , with tails of electric plasma ... it would be waist money to send a lander on a comet outfitted to land with the purpose sample ice which wont be there.

https://youtu.be/n_ZX6LReaMw

[Windflier]

Every flyby has shown comets to be burnt dry rocks

Yep. Until cosmologists admit their theories about the origin and composition of comets is completely invalid, there's not much point in doing further flybys.