Nice chord progression! Also I really like the arpeggios starting around 14 sec. Overall the sound design is very nice and the track is also well mixed. I have to say for my taste the mix is a bit too bright because I more like the dark kind of tone. This is only a matter of taste of course and I can see in your description that you were aiming for that bright atmosphere. My main point of critique for your track is the repititiveness. You basically only have one part that loops over the whole track and that is actually quite long. There are some really easy things you can do to give the track a bit more variation. You can start by transposing it just a few steps up or down. Then give the drum patterns some more variation. At the end it would be best to do a second counterpart were you change the chord progressions. Maybe also give some attention to the drops, which can be a completely different part for their own. Keep it up!

Black holes are easily my favorite celestial body, they are so mysterious and completely defy physics as we know it being essentially points where the space "breaks", and this song captures their mystery and power beautifully, it's impressive how you manage to make it sound so light and chill yet intense and threatening.

Very nice, it's very active but weirdly chill due to the heavy use of light pads. I approve, good combination of heavy bass with lighter elements is my fav. The mix could use work. I feel like in some of the later parts there was too much compression.

Also nice subject matter, and I think the song fits the bill.

"I'm NoStereo and this is my favorite song on the portal"

Quite nice. Lime it!