Comment Read Heinlein (Score 1) 234
Many of Robert Heinlein works were truly Science Fiction. His characters' travels around the Solar System, for example, are described enumerating the challenges and details such travel are likely to have in real life. He also has several descriptions of human life outside of Earth — on Ganymede, on Mars, and on the Moon. None of the descriptions were patently unscientific, when they were written (knowing what we do now, he would not have described life on Venus as he did, of course).
He wrote many of such books for children (and published in children publications) or about children — so you can read them with/to your kids. The bonus is, such reading would not even seem like work — you are likely to truly enjoy it...