3rd person POV
In the Ponyville train station, about a hundred ponies and a couple gryphons, mules and other waited patiently, the mane six plus the three royal astronomers went there. Then Twilight said:
"Hello! Please move to the town hall to explain why are you here." Twilight assumed they were all just called by pricess Celestia without an explanation.
Meanwhile, Saturn walked through the crowd, just admiring the amount of specialists, but then a familiar shamrock green mare caught his eye and trotted up to her.
"Air Flow?" He asked.
The mare turned around and smiled.
"Saturn!" She yelled and hugged him.
"How have you been? I haven't seen you since you left to Trottingham to continue your studies." Saturn asked, releasing from the hug.
"Fine, rather boring, until Celestia called, did she summon you too?"
"Um... Do you know why did the princess call?"
"No, not really."
Saturn got closer to her and whispered:
"Don't tell anypony, but..." he proceeded to explain the whole conundrum to her.
Air just remained silent, pondering, while he walked next to Saturn to the hall.
All the specialists were now in the place where Nightmare Moon showed up, when Twilight Sparkle first came to Ponyville.
"Hello?" Twilight was on the stage and tapped on the microphone, then she cleared her throat and continued.
"Recently, the Manehattan observatory detected an asteroid of considerable mass that... Is in crash course towards earth."
Twilight closed her eyes while he heard everyone in the room gasp.
"We're all gonna die!"
"This is the end of times!"
"Blame the princesses!"
"Calm down!" Twilight yelled.
The crowd ignored it, but instead of yelling or responsing aggresively, most of them were lying down and crying.
"Let me handle this." Saturn, who was also on the stage said to Twilight.
Saturn grabbed the microphone with his magic and put a smile in his face.
"Hey, here's a joke for all the programmers out there: there was once a foal who wanted to be a great author, when they asked him to define 'great' he said that he wanted to write stuff that the whole world will read, stuff that people will react to in a very emotional level, stuff that will make them scream, cry, wail, howl in pain, desperation and anger! He now works at a computer company writing error messages!"
A slight chuckle could be heard from the crowd, another joke came to Saturn's head, even though he really wasn't a social pony, whenit was time to tell a nerd joke, it was just his duty.
"Here's one for the engineers: most people say 'if it ain't broken, don't fix it', but engineers believe 'if it ain't broken, it doesn't have enough features yet'."
This time the laugh was louder. Then Twilight finally comes and says:
"Helium walks into a bar, but the bartender says, 'sorry, we don't serve noble gases.' Helium doesn't react."
A couple of nerd jokes later, including the "Photon goes into a hotel and the bellhop asks if he has any luggage. The photon replies 'no, i'm travelling light'" classic, the whole crowd was calm.
Of course it was highly unusual to see such a crowd come without any notice, and to Ponyville! So obviously a couple of curious ponies were able to sneak in.
"Okay, now you may be wondering why did Princess Celestia called you, well, we have devised a plan that just might work." Twilight said.
Telescope brought a big blackboard and gave a piece of chalk to Twilight.
"Okay, the plan is this: we build a group of spaceships..." She drew a simple cluster of cones, and then a shapeless circle-comparble object over it.
"Each spacecraft will have a laser, and with some synchronization..." She drew some 'spaceships' orbiting the 'asteroid' and started tracing lines going from each 'spaceship' to the 'equator' of the 'asteroid'.
"They'll be able to decrease the size of the equator..." Then she drew a larger 'spacecraft' pointing towards the asteroid.
"And once it is weak enough, we will drop a bomb of powerful, destructive magic to the equator." She drew a small box "flying" towards the asteroid.
"If we do everything correctly, we will be able to save Earth!" She said, crazily writing irregular lines to simulate an explosion, and happy faces around it.
"Any questions?"
Only one claw could be seen lifted, but it wasn't from a gryphon, it was from none other than the former god of chaos/current god of trolling: Discord. Twilight let out a heavy sigh and asked:
"What do you want, Discord?"
"I want to know why didn't you invite to this little gathering."
"Are you an astronomer, engineer, or anything space related?" She asked, clearly annoyed.
"Of course! back in the day, outer space was pretty fun to fool around with."
"Okay, I didn't know that, so if you just had the courtesy to leave..." Twilight was interrupted by Discord.
"Of course not! I'm gonna help you solve this!"
"Why?" Saturn asked, getting into the conversation.
"Because it kinda somehow technically could be considered my fault."
Twilights heart nearly stopped, a little for the surprise, but mostly for the rage.
"What?! Did?! You?! Just?! Say?!"
" you'll see, back when I was ruling Equestria in eternal chaos, I decided to play with space, like I just said, so while messing with the asteroid belt, one asteroid collided with another one affecting its orbit so it would collide with earth in a thousand years. I didn't know back and had forgotten until you reminded me! Thanks by the way."
Twilight was still recovering but she payed attention to the story.
"So... That means you're powerful enough to get the asteroid of its course?"
"Sorry but... I haven't told anyone, but my magic is getting weaker, I was much more powerful back then. Sorry."
"Well, it seems you want to legitimately want to help, so I guess welcome aboard!"
Discord dissapeared a millisecond and reappeared in an astronaut suit, floating and spinning slightly.
"Thank you! I won"t let you down!"
Twilight turned to the microphone and announced:
"Okay, everyone get rest, tomorrow we will start planning, physicists and mathematics will come with me, astronomers with Saturn and engineers and programmers with Telescope.
...
Saturn was now on a bed in a small bedroom, he was staying in the house of an old schoolmate, Lyra Heartsrings, while she and her room-mate went on a trip to Trottingham. Soon, he will start working and everything will be fine.
Or that's what he thought...