我国人造卫星的发射时间一般都在晚间7点至9点之间。原来,这是根据科学原理选定的时间。由于火箭上装载的蓄电池的容量有限。卫星到达35800千米的高空时,太阳正好以最大的夹角照在10000多块太阳能蓄电池上,使太阳能电池接替蓄电池工作,卫星则获得了取之不尽用之不竭的能源。如果不在晚间这个时段发射卫星,卫星上天后就不能以最 China’s satellite launch time is generally between 7 o’clock and 9 o’clock in the evening. It turned out that this is based on scientific principles selected time. Due to the rocket’s battery capacity is limited. When the satellite reaches a height of 35,800 km, the sun shines on more than 10,000 solar cells at the maximum angle so that the solar cells can take over the work of the batteries, and the satellites gain an inexhaustible supply of energy. If you do not launch satellites in the night time, the satellite can not be the most after heaven