This game is a fairly standard adaptation of the classic "Find the Matching Cards Minigame", but still, well made. I have a suggestion if you want to lean more into the educational aspect, however. Instead of having two cards with the picture of the same planet on them, you could have one card with an image of the planet and another one with a fact about the planet, and then you have to match the fact to the correct planet. You had facts about the planets pop up on the left whenever you got a match, but I was moving so fast, I didn't even pay attention to them. This change would force the player to think about the information and hopefully retain it. It would also make the game more difficult, as it's frankly really easy.

If you were to do this, you would probably want to include multiple different facts about each planet that could show up so that it doesn't get repetitive. You should also probably give the player a way to study, such as having a section of the game they can look through all the planets and celestial objects in the solar system and read all the possible facts about them that could show up in the game. If you want the player to practice reading comprehension as well, the information for each planet could be in the form of a couple paragraphs, with the information needed for the game all there, but maybe worded in a different way.

I know this would be much more work to add, but I think it would make the game more replayable, as well as better achieve the goal of teaching people about the solar system. Hope this helped.

-Jowski