在我们的生活中,即使再安静,也会有变幻的声音和色彩,让我们的视听得到刺激。然而,当宇航员在天际飞行时,几个月的时间,透过舷窗口只能看见黑暗无边的天空、亮丽却从不闪烁的群星,还有那永不坠落的圆盘式的太阳。就像宇航员尼古拉耶夫所说的:“在宇宙飞行,我们缺少在地球上所习 In our lives, even if quiet, there will be a change of voice and color, so that our audio-visual stimulation. However, as the astronauts flew in the sky for months, only the boundless sky was visible through the porthole, the bright but never-flashing stars and the never-ending disc-shaped sun. Astronaut Nikolaev said: "In space flight, we lack the experience of learning on Earth