Twilight had just watched Luna's moon raise once again while she was spending a night at the Canterlot Palace. They had just finished with a gathering of the Griffon Kingdom and Cloudsdale. Now, it was time to retire to her chambers. As she made her way up, she expected to see Luna to be heading in a similar direction, but when she did see her, Luna did the exact opposite.
She was heading for another part of the castle. Well, at first, Twilight felt she shouldn't impose, but what would Luna be doing at this hour? Not night court, unless somepony had called a meeting, and that was in another direction in the castle. Finally curiosity got the better of her, and she pursued Luna, but quietly. Luna soon came to a set of doors within the castle that Twilight had never scouted before. She knew when she was a filly there were parts of the castle that were off limits to her when she was under Celestia's tutelage. But this was not a set of doors she was familiar with, nor had she ever been told she was not allowed to intrude. Luna had soon opened the doors and said, "You can come out now. No need to hide Twilight," Luna urged her.
Twilight was shocked. Luna knew she had been there the entire time? She soon stepped out to reveal herself to the Princess of Night. "Hello dear. I had sensed your magical presence as I made my way down here. That, and your hoofsteps are not as quiet as you think," Luna pointed out.
Twilight scratched the back of her neck with her hoof as she blushed with a goofy smile. "No need to feel embarrassed dear. I knew you were curious about something, and well, I believe it is time that you knew about something that no pony has told or shown you. Not even my sister," Luna said.
"Oh, I, was I intruding on a bit of private time?" Twilight asked.
"Well yes and no. I mean, I've never led anypony to this room I had added before, but I never restricted anypony from entering, and well, this is something you need to see, to help you understand some things. About me... and about yourself," Luna replied.
"Myself? I-I don't understand," Twilight stuttered.
"Just follow me through here, and all will be explained," Luna said.
Twilight was a little uneasy, but, knowing Luna was a mare who could be trusted, she followed her fellow princess into the chamber. The doors soon shut behind them, and Luna illuminated the room with light from the tip of her horn and Twilight soon followed suit. Luna then lit candles with her magic to light up the room dimly. There, Twilight saw what appeared to be something similar to a meditating area, like she had seen many of her peers and teachers use, while at magic school.
Luna soon laid on the bed in the middle of the room and Twilight joined her. "Now Twilight, what I am about to do is have us enter a very special kind of dream state. A way to see what happened in the past. In a past known to only a hoofful of ponies, including myself, Celestia, and Discord," Luna stated.
Twilight nodded, "Alright I am ready." Twilight replied.
Soon Twilight and Luna closed their eyes and Luna cast a spell that sent them into the realm of dreams. What Twilight saw next amazed her. The place was gleaming with starlight in the sky, but much more complex then anything Twilight saw in the night skies of Equestria. There were stars that clustered into galaxies and the sun shined dimmer, but still bright enough, and ponies were playing around, having fun. "Where are we?" Twilight asked Luna, who stood right next to her.
"Believe it or not, we are on the Moon. We are looking at the final days of peace of what was once my domain of rule. While my sister watched over the ponies of Equestria, I had my own charges to look after, here on the Moon itself," Luna said.
"Wait, ponies actually lived on the Moon?" Twilight asked in shock.
"Yes, have you noticed that there are some ponies back in Equestria that have pupils that are more narrow than the round ones that you usually see?" Luna questioned.
"You're talking about the ones who are usually out at night?" Twilight pondered.
"Yes, I know most call them Bat Ponies, but the reason they have different eyes and wings, was because of where they lived, or at least where their ancestors lived. The Moon was a very different environment, so I had blessed the ponies with the tools they would need to live here. Granted much was very similar to Equestria, but the fact it was darker on the Moon, they needed the proper vision, and the winds here were much weaker then Equestria's, so feathered wings for most pegasi was an issue. I did not have much problem since I could easily adjust my wings for the conditions of both realms, but to help my charges cope with the Moon's conditions, I gifted them with their special wings, were they of pegasi origin. These traits were passed on to their descendants. I ruled the moon with peace and prosperity for a long time, and allowed ponies from both realms to visit each other, since I went between realms to visit my sister, and she, the same for me. This day was especially joyful to everypony. A miracle had happened some months prior," Luna stated.
"What happened?" Twilight asked in anticipation.
"I was with foal," Luna said.
Twilight gasped. She had not known of any descendants spawning from Luna herself. "I was so happy that I was to have a little one to help lead my charges into a more prosperous future in a few days. But it was not to be," Luna stated.
"Why?" Twilight inquired.
Their session was interrupted as Celestia awoke them from their dream trance. "Luna, I am so sorry to intrude, but you and Twilight have been here since Night began, and it is time for us to raise and lower our respected pieces of the heavens," Celestia informed her sister.
"Of course sister. I do apologize Twilight, but our small session here will be on recess til tonight. I must see to the heavens for now," Luna said.
"I understand Princess Luna," Twilight said.
She let the sisters take their leave, but what she had seen, even though it answered some questions she might have asked in the future, now she was left with even more questions from the session that had happened, and hopefully more would be answered tonight. Even though it felt like she had been awake in the dream, she felt very well rested, and got up to see what she could help with as she watched her mentor's sun rise into the sky, and Luna's beautiful moon lower. She couldn't understand why, but she always had a fascination with the moon, even when she was a filly still in the stages of being stable trained.
Meanwhile, Celestia spoke with her sister. "Are you sure tonight is the best time sister? Are you sure she's ready to know?" Celestia asked.
"I do sister. She will find out one way or another, and I feel this is the best way to let her find out," Luna answered.
"Alright, but if you need help, don't be afraid ask," Celestia nuzzled her sister.
"I'll keep that in mind Tia. Now, don't you have day court to attend to?" Luna teased.
"You're coming too Lulu. I'm not dealing with the snotty nobles alone again. 1000 years of that was enough," Celestia joked.
The two sisters had a laugh as they went to meet with Twilight and make their way to the throne room.