'Among being a Dancer, Rapper, and Vocalist, which position do you love the most about Hyunsuk'
Why do I have to choose when Hyunsuk is good at everything. But I really like Hyunsuk when he's rapping
#7chilldayD4
Christiaan Huygens FRS, was born #OnThisDay in 1629. Amongst other achievements in maths, physics and astronomy, Huygens studied the rings of Saturn and discovered the planet's moon Titan. He also invented the pendulum clock, for centuries the most accurate timekeeper available.