What's next: Over the next few weeks — as it makes its way out to a point about 1 million miles from Earth — the telescope will start to unfurl, deploying its tennis court-sized sunshield, gold-coated mirrors and scientific instruments into the proper configuration.
比如我需要稳定地看个方向
然后需要再换另一个方向
What's next: Over the next few weeks — as it makes its way out to a point
about 1 million miles from Earth — the telescope will start to unfurl,
deploying its tennis court-sized sunshield, gold-coated mirrors and
scientific instruments into the proper configuration.
陀螺仪控制的反作用轮
以前都是喷射气体或者燃料燃烧调整，喷完了就废掉了
现在换成离子推进器了吧？有电就能继续
你说的这个网球场大的mirror是用来遮挡太阳光的，避免太阳光干扰望远镜