Those moments are

@BosmangBeratna The Blue Wizards, who went into the East and were never heard from again.

@LiberalLibrarian wonder what wizardry they got up to.

@BosmangBeratna Tolkien didn't write much about them, of course. I saw a video a few months back which posited that they went into the East so as to lessen Sauron's hold over the Men there. But, again, there's very little in Tolkien's letters to indicate one way or the other.

@LiberalLibrarian @BosmangBeratna

Saurman the Wise, Gandalf the Grey Wanderer, Radagast the Brown, protector of nature, and the blue wizards that went far to the east, to seek out their destiny.

The 5 Valar of Valinor.