航天发射时,运载火箭拖着长长的火焰直飞九天的画面,已为人们所熟悉。然而,也许过不了多长时间,这种场景就会发生全新的变化:那长长的火焰被一束激光所取代,震天动地的隆隆巨响隐于无形,在无声无息中,卫星被成功送入太空轨道。科学家们正在苦苦探索的激光推进技术,就是把这一幕变成现实的神奇钥匙,引领人类进入一个崭新的航天时代。 Astronautics launch, the launch vehicle dragging a long flame straight nine-day screen has become familiar. However, it may not be long before the scene changes radically: the long flame is replaced by a laser beam, and the earth-shattering roar hides itself invisible. In silence, the satellite Was successfully sent into space orbit. The laser propulsion technology that scientists are trying hard to explore is to turn this scene into a magical key to reality and lead mankind into a brand new space age.