Like the Horsehead, the Flame, and the Orion Nebula itself, M78 is a readily visible part of the large Orion Molecular Cloud complex some 1, 500 light-years distant.
正如马头，火焰，以及猎户星座一样，M 78是大猎户座分子云可见的一部分，约有1500光年的距离。
2
The edge position, visible area and the mean of gray value of flame also be discussed by analyzing the flame images.
分析火焰数字图像，讨论了火焰锋面位置、火焰面积、平均灰度的计算方法。
3
The Olympics flame is visible above the Bird's Nest at all times.