"It could be but we still don't know for sure. We need to see what history there is since this has happened already."
She quickly found 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.
Twilight nodded, "This confirms it. An amulet was made 500 years ago to combat this same problem. Also that this time, it is much faster at expanding. Reaching what it did last time in a few weeks, in just hours now."
"That didn't really help—as much as I thought it would," said a disappointed and tired Starlight. "The unabridged amulet book already told us a lot of this. Should we make the amulet, or do you think there is more to discover?"
"At least—we know the—amulet—and spell worked last time—." Twilight struggled to catch her breath. Twilight struggled to catch her breath. It was practically an oven more than a building now. The thermometer Starlight had used maxed out at 210 degrees.
Starlight was out of breath and on the brink of collapse. "We have to make—the amulet."
Twilight tried to teleport the required materials to them, but it was too hard. Her vision was doubled and blurry, but not enough to prevent her from witnessing the red sun taking over the Equestrian sky.
"No . . ." Twilight murmured to herself before falling to the floor to join Starlight.
As she fell, so did the planet.