"Books come in handy." I said in a smooth tone.

I remember reading about the northern lights... It was a summer day, and I was reading my books again. This book was about weather.
I was on page 147, when something striked my interest. This chapter of the book was titled: "Rare, But Fascinating Occurrences In Weather." The first one they listed was about the northern lights, and they even listed the scientific name for it! The scientific name was: "Aurora Borealis."

The flashback from the past cleared away and I was back to the others.

"It's the scientific name of the northern lights." I stated, clearing things up.

"Ohhhhh." The others said in unison.

"Could you take us back to Ponyville?" I asked Aurora.

"Actually, I was planning to do just that!" She cheerfully said. ...Wait... What? I didn't question it, and just went with it. It was probably better like that anyways.

"While you are here I can tell you a story... Sit." She said, getting the train in gear. She flipped a few levers, and we took our seats.

I realized how similar the train was like to a bus... I mean the train didn't even look like a proper train!
...Oh well, it was unique and I liked that.

We all took seats, and prepared to listen to our driver and new friend? New ally?

She began her story.
"Once upon a timeline, there was an alicorn. This alicorn is formerly known as Luna, the pony of the moon. Luna controlled the essence of spirits in dreams, and she also controlled the northern lights. Many ponies didn't know this...

She raised the moon, and after that she didn't have much power left... Plus, on top of that, the rest of her night was spent in the dreams of other ponies.."