I'm so glad you found the bag and took the time and trouble to return it.
我很高兴你发现了旅行袋而且不怕麻烦花时间将它送来。
So far, so good.
到目前为止还好。
Once we detected a planet, we would have to find a way of blotting out the light from its star, so that we would be able to 'see' the planet properly and analyze its atmosphere.