The basic mechanics seem interesting, but a lot of it is not very clear: how do you get different planets? What does the upgrade button do? Are burnt cards lost, or are they shuffled back in the player's deck? Also I spent most of the time discarding stuff because I didn't get anything playable, and that's not really fun - or maybe I'm just stupid and didn't really get the game! :)
Designing an interesting card game in 10 days is definitely a hard task, and balancing it would be almost impossible - I actually think you did a really good job getting down the basics and the theme! If you decide to keep working on this game after the jam it could be really interesting!