Secret files in the old embassy basement spoke of cover ups, some pertaining to the earlier cosmonauts bringing back a marker after a secret mission to the moon.
Details were vague but alluded to one cosmonaut known simply as Maya who was left enthralled by the marker, its glowing diaper like shape leaving her diaper dependent and very unwilling to act like an adult, these are all conspiracies though, there wasn't really an alien marker capable of mentally regressing those exposed to its presence... as far as official sources claim.