These are only very minor nit-picky things, whilst exploring on desktop mode, that I hope can be helpful.
- When I click on eg. the moon. It it goes to full page, I only found ESC to go out, maybe add a few more options to go back to the dashboard view, such as clicking on top bar title "Lumara", or a top right X that hides away if no mouse movement.
- When I click one of the corona buttons, the image box itself lights up with what I assume is a dynamic colour selection function. This is cool, but I think the boxy outline breaks the immersion slightly, I would just keep it no glow.
- I would also but the buttons to Apple Store and Play Store maybe in the bottom left under the control panel, so that the imagery really shines with minimal distraction. Or maybe leave it to appear only towards the end of scroll (As is already there).
- Lastly the top left Circle is not aligned with the bottom left.
Again these are only suggestions of minor things! I really do think it looks great and good job!