Nature's spectacular fireworks show, a meteor shower,comes into view when the swarms encounter the upper layer of the earth's atmosphere during the earth's perpetual revolution around the sun.
Nature's spectacular fireworks show, a meteor shower,comes into view when the swarms encounter the upper layer of the earth's atmosphere during the earth's perpetual revolution around the sun.
当地球绕着太阳作循环往复的公转时，流星团如果遭遇地球大气层上层时，就会出现流星雨这种大自然烟火的壮丽景观。