I don't want to sound like a busybody, but didn't you plan to go abroad?
我并不想瞎打听,可你原来不是打算出国吗?
Let every tub stand on its own bottom.
各人管各人自己。
Alternatively, if the star were small, the life-supporting planet would have to have a close orbit round it and also provide the perfect conditions for life forms to develop.