Yah
A very good song indeed. the start is really making it sound like you're going to get out on a big space journey, and the sfx coming then makes it complete, also it is a very good addition for the sound of this piece.
The background synths and stuff are great for this piece, but the melody the pad plays seems off-tone, and the order of the notes, and the notes, are not making harmony, and they doesn't sound melodical.
You could change the notes to one full note up and two down (I think that's what I'm thinking about), which would have made it sound really great, and also it would have made it sound more epic-ish-y.
The percussion in this is good at times, but I don't think clap only is good for percussion, even though it is only on parts. Yu should have the percussion much more exciting the whole track over.
'nuff sed. >:(