Further Than the Moon

How Stars Are Born

Since the day at the mall, the girls became closer. Even Joohyun would join the group for lunch sometimes, but once or twice she would rather spend her time at the library to study. But the group didn't feel bothered about it, they knew her, and Seulgi would often join Joohyun for her studies.

"Seulgi?"

"Hm?" She answered, still focused on the shadows of her drawing.

"What are you drawing?"

"I'm not telling you."

"Why not?"

"Because I still don't want to, but I'm almost done for today and..." She felt a soft and wet tissue touching her arm. "Omo, unnie! You could've messed up with my drawing."

"I'm sorry! But your cheek is dirty with your pencil's graphite." She pointed to her own cheek to show her. "Yes, right there. Done. What technique are you using? Can you tell me this at least?"

"I scrape the tip of my pencil with a sharp tool; my stiletto. I put the graphite dust in my sharpener, so that I can close it and save it for later." Joohyun nodded. "I take the dust with a fine brush, test the coloring on another paper and then do the shading on my original drawing."

"If you have a brush to do the job then how come you're all dirty?" She said, taking Seulgi's hands in hers, seeing that the tips of her fingers and also the inside of her hands were all grey. Joohyun's hands are soft.

"You see, unnie, sometimes you need to use your own hands to do some details."

"But not your cheeks, huh."

"Yeah, not your cheeks."

As soon as she finished her drawing she packed all of her materials and folded her 'test paper' in half.

Seulgi closed her sketchbook and got up looking for the closest trashcan. She saw one by the side of a bookshelf, just three tables away from them. She aimed, like throwing a boomerang, and stopped "You think it will get there?".

"Not really."

"Mhm, and why?"

"Because of the weight of it, Seulgi." Joohyun looked at her, supporting her face with both her hands.

"Aaaaand?" She blinked slowly waiting for an answer that didn't come. "Gravity and air resistance."

Seulgi threw the paper. It bounced in the air, floated a few centimeters and turned to the side, falling in front of Joohyun, who picked it up and crumbled it into a ball. "Try again."

"Why do you think it will get there now?" Already in position to throw it again, aiming as if she was playing baseball.

"It could get there because of gravity and air resistance, I guess. But I don't think you will make it." Seulgi smirked at her, convinced she was too good to miss the shot. She threw it, only to see it fall a few centimeters away from the trashcan.

"Okay." She threw the paper and the wet tissue inside the trashcan. "It was all a test to see if you knew about these things."

"Are you going to explain the experience now, professor?" She crossed her arms.

"Well..." Seulgi adjusted her black shirt, buttoning it to the top. "The Air Resistance, it's a force that acts in the opposite direction of the movement of an object. The force is exerted by the air, with the intention of restricting the movement of the object. Depending on the shape of the object, it undergoes a different force, greater or less. The shapes are characterized by a number called 'aerodynamic drag coefficient'. The lower the coefficient, the better the aerodynamics."