The act of stargazing indicates that such a person is genuinely interested in self-reflection, introspection, critical thinking, and questioning the universe and their perception of it.

That is wisdom.

Here's an example, using your "still a bigot" explanation.

Bigot A says, "I'm not letting my daughter within a mile of any <insert anything here> boys! I'll not have her sullied by their filth."
He is unwise. He is also misinformed.

Bigot B says, "I can't let my daughter get too close to any of those <insert anything here> boys... I don't really know if that's right or not, but I have to do the best I can by her with what I know."
He is wise. He is also misinformed.

The difference is that Bigot B recognizes that his way may not be the best way, but it is what he has to work with at the time he makes his decision.

Both Bigot A and Bigot B can be swayed from their ways and become accepting of others, but only Bigot B has any hope of doing so on his own. Bigot A cannot self-reflect and will need to be led by someone he respects... probably by someone like Bigot B.