The mission in the Taikon School of Exploration, in the University Quarter of the Arcology of New Victoria: Professor Dall's Sphere, may be left in your mission tab forever if you offer the sphere to Domina, or destroy it by placing it within a wreck and blowing it up, as it lacks a failstate.
Possible Solution: After obtaining the sphere and not having it in your cargo hold, there could be a dialogue option to say "It was destroyed" to end the mission in a failure, should you have already used the sphere for other purposes, or are planning to do so.
