Thanks so much for the detailed feedback!
The crash is new information for us, so anything you can remember that could help us narrow the problem down would help a ton - especially whether it happens at a particular moment.
On the web stuttering, you're right, and we have a fixed build ready since yesterday. We're just waiting for the jam voting to end before uploading it.
On the goal, that's fair, we need to signal it better. It's meant to be exploration, with the leaderboard as the pull: chasing a higher score makes running into black holes and new areas basically inevitable. Clearly not communicated well enough yet, and we're already rethinking how that hook works for the full version ;)
Also, a small confession about the orbit melodies - they're not really melodies, just tones whose volume scales with your distance from each planet. The fact that it comes out sounding musical is a happy accident, and we're very happy you noticed it.
Thanks for playing!