I read it in a sci-fi collection book, like a "Greatest Sci-Fi Of XXXX". I read a story years ago while underway on a submarine, about a door that appears on the moon, and a retired astronaut is brought out of retirement to go investigate it.
She and her team end up entering the door, and finding sufficiently advanced aliens that they are overcome with joy upon discovering, and end up unable to do anything but kneel and worship, which the aliens seem delighted with at first, but slowly become unhappy with the worship aspect.
Throughout the story, it becomes clear that the aliens are a "partner-race" to Humanity, but Humanity is not evolved enough to be able to stand equal to the aliens, and the aliens do not want to be worshipped. The aliens end up leaving and taking their moon-door with them, to wait for another unspecified epoch to pass, to see if Humanity can evolve again to join them as desired.
Does anyone know what this is?