나사에서는 블랙홀 사진을 감상하는, 블랙홀 기념의 날, 이라고......
<In this artist's illustration, turbulent winds of gas swirl around a black hole. Some of the gas is spiraling inward toward the black hole, but another part is blown away.>
<A black hole is a place in space where gravity pulls so much that even light cannot get out. The gravity is so strong because matter has been squeezed into a tiny space.>
지갑의 현금이 블랙홀에 삼켜진 것처럼 사라지는 날 - 블랙 프라이데이, 아니 블랙홀 프라이데이.
