The flame from the burning propellant appears as a solid white mark.

CNN: Photo reportedly shows N. Korean rocket in flight

Around the world today, sirens are sounding, candles and torches are burning, and people are gathering to pray and mark Yom Hashoah, the "Day of Remembrance" of the Holocaust.

NPR: Remembrance, Reconciliation on Yom Hashoah

"He was very afraid of fire, very scared of burning, " she said, describing his complaints after mere steam from hot tea once left a mark on his hand.

CNN: STORY HIGHLIGHTS