I really like this! It seems like you have a fascination with astronomy? AWESOME.
Ok, onto the actual piece. The rhyming was well-done, not horribly contrived. The mix of what I call "pretty language" with scientific jargon was good. That's all I can really say about this...not much to criticize. Nicely penned and an enjoyable read. :)

Breathtakingly beautiful. Divine as far as any poem will ever go. You are truly one of the best writers I've ever had the pleasure of coming across.