"I think I'll start with the book on solar history. Maybe it has something about solar anomalies."
Twilight walked to the history section of her castle's library. She looked carefully across her alphabetically-organized history books, of which every alphabetical letter was organized by its historical relevance. Due to her impeccable organizational skills, Twilight located the desired book with ease.
She immediately opened the book, "The Solar Codex, this could be helpful."
Twilight flipped through the codex, quickly scanning each page. Something soon caught her eye, a picture of a glowing red sun. She translated it from Old Ponish:
Six-hundred-thirteen years after the Celestian epoch, the solar celestial body in the heavens revolted against us. The sun grew mad at Celestia's unending control over it, turning red and advancing in size. For weeks, the days gradually grew hotter, roasting all creatures below. On its thirty-third day of the assault, it had prematurely ended winter, melting ice and snow. On its forty-sixth day of expansion, it had grown brighter, redder, and entirely replaced the middle of winter with the peak of summer. It was not until the fifty-fifth day that the sun's anger was abated, retreating back into its original form. Winter was allowed to resume after it returned to a smaller, calm, yellow orb in the sky, obeying Celestia ever since.
"So it has been about 500 years since the sun last grew," Twilight pondered. "That is an oddly specific time for the sun to become hostile again. How was the sun cured last time?"
Starlight entered the library. "Hey Twilight, I didn't see you at breakfast. Is everything alright?"
"Yeah, I'm just doing some research."
"What about?" Starlight walked to Twilight to glance at what book she is reading.
"I'm reading about the sun's activities throughout history."
"Because it is strangely hot today? The thermometer at the door says it is 100 degrees outside."
Twilight looked worriedly at Starlight, who returned a glance in the form of concern. "What is it, Twilight?"
"Right now, the sun may be trying to kill us all."
Starlight gasped in shock. "Well, what should we do?"
Twilight responded,