Great game. Love the puzzles and how they combined with the platforming sections. The artstyle is a blend between a lot of stuff, but there's something personal and scrapbooky about it. The biggest draw to this game is the atmosphere, the music doesn't interrupt the ambiance too much and compliments it rather well. Traveling between planets while reading about them with the radio in the background gives a comfy feel to the game. If you liked the movie Interstellar you'll enjoy this game.
I think the photography mechanic could have been utilized more as it's pretty much a substitute for player memory. It's appreciated but I thought the game would be based around it some how.
The battery/travel between planets didn't seem to add much other than give reason as to why you can't bounce between stars. If expanded upon a little more it could have been an interesting survival mechanic. But really I guess it's hard to design something like that along with such a fixed platforming puzzler.
Don't let these complaints detriment the game though, they're more or less things I noticed that could have been different.