Reddit mentions of The Wonderful Flight to the Mushroom Planet

The very first chapter book I remember my father reading to me was The Wonderful Flight to the
Mushroom Planet by Eleanor Cameron, It's a children's scifi story about two boys who built a spaceship out of tin and scrap and fly off to a tiny planet where they must solve a distressing mystery.

Once we finished, he helped my brother and I "build" a spaceship in the backyard just like the protagonists, which was a very fun extension of the novel and probably why I still remember it so vividly years later.

Good cliffhangers, perfect for stopping each night and leaving your daughter wanting more!

Here's an amazon link to a paperback reprint
https://www.amazon.com/dp/0316125407/ref=cm_sw_r_sms_awdo_t1_9kZQCbQCRMAYR

No, but I still fondly remember the Wonderful Flight to the Mushroom Planet by Eleanor Cameron.

Very good books for kids. Although.... interesting to look at now.

No, it's not about feeling awkward reading Christian literature. I read Christian literature all the time. What has happened to me, though, is that I've read books as a kid and not realized the ideological agenda that they were trying to push on me-- not that I've ever actually been convinced of an ideology by children's literature-- and then later, coming back and reading it, it always feels a little disappointing. I trusted certain authors to provide creative stimulus and a rich imaginative world, and they used that to try to influence my little kid brain to buy into their ideology.

Now, every book has some kind of ideology, certainly. But going back as an adult and re-reading something like The Wonderful Flight to the Mushroom Planet doesn't give that same sense of disappointment.

The Wonderful Flight to the Mushroom Planet - Eleanor Cameron

and

Stranger from the Depths - Gerry Turner

Another redditor recently referenced the Mushroom Planet books, some of the earliest science fiction I ever read, around the age of your daughter. I didn't think that they were still around, but used copies are available on Amazon. http://www.amazon.com/The-Wonderful-Flight-Mushroom-Planet/dp/0316125407/ref=sr_1_1?ie=UTF8&qid=1396535650&sr=8-1&keywords=mushroom+planet