Metroid-esque! I like it quite a bit, although it sounds a bit more like a deserted space station to me. Maybe that's why it feels like a Metroid song to me.
While I do like the song, it seems more desolate and... Hmmm... Ambient, I think, then chaotic and frenzied, which an asteroid field would certainly be like. This does a great job at building up suspense, for whatever the situation is, but I feel like it needs to be a bit more chaotic for that situation.
What did you use to make this, by the way? It sounds quite nice, but unlike what I've heard before here on Newgrounds.
It was still very enjoyable! You seem good at creating suspense with your music.