Still life

The world has never moved.
Which is a weird thing to say in all honesty-why wouldn't it?-but it's true. Our planet, Yannis, doesn't rotate, and neither does the two moons that "orbit" around it. Because of this, Yannis is split into four 'countries'-Dawn, Day, Dusk, and night. People from all countries look like how you expect-Pale skin in the Night, tanned skin in the day, etc. I, myself, live on the border between day and dusk, a place called 'Gold' because the light of the sun forever hitting the horizon is always beautiful and gold.

But I found out today that we aren't supposed to be that way at all.
There was a statement issued by our space foundation, COSE, that said that they started to discover planets that orbited around their sun, creating seasons and day-night cycles. When I first heard about it, I thought it was an anomaly, but more and more research proved vastly otherwise.
"Hey, Dad?" My father works for COSE, so I brought this up with him.
"What is it, Orelia?" My father's dawn accent, though only slightly more pronounced than mine, responded.
"Why don't we rotate?" I sat down next to him.
He sighed. "I wish I knew. We're trying to figure it out, but...we just have no idea."
"Well, how will you figure it out?"
"I couldn't tell you."
"Oh."
I spent the rest of the day in my sketchbook, imagining what it would be like to live through day and night every day, through changing temperatures and even seasons.

I went to sleep with the idea still in my head...
And that's when I was visited by them.