The Pencil Nebula Supernova Shockwave

Credit: Hubble Heritage Team (STScI/AURA), W. Blair (JHU) & D. Malin (David Malin Images), NASA

Explanation: At 500,000 kilometers per hour, a supernova shockwave plows through interstellar space. This shockwave is known as the Pencil Nebula, or NGC 2736, and is part of the Vela supernova remnant, an expanding shell of a star that exploded about 11,000 years ago. Initially the shockwave was moving at millions of kilometers per hour, but the weight of all the gas it has swept up has slowed it considerably. Pictured above, the shockwave moves from left to right, as can be discerned by the lack of gas on the left. The above region spans nearly a light year across, a small part of the 100+ light-year span of the entire Vela supernova remnant. The Hubble Space Telscope ACS captured the above image last October.

연필모양의 성운?? (The Pencil Nebula );;

초신성의 충격파가 시간당 50만 킬로미터씩 퍼지고 있다...

빛이 1초에 30만 킬로미터씩 이동하니..역시나 빛보단 느리지만..

정말 대단한 속도..  근데두 우리눈엔 정지한것처럼 보이니..

저 성운이 얼마나 거대한지......?