Hello Sweetie. You have been having some interesting Experiences during Meditations have you? That is really awesome! This tells me you have been really putting effort into Meditating and Advancing your soul. You know very few people do that, very few Satanists even. I think your very special to be doing this. You are very special.
In my Humble opinion the lights are the chakras getting lighter and brighter. The space could be a felt connection with the universe, part of the Gnosis. But remember Most things we see in Meditation are our own mind trying to make sense of things. So some people may see other things and it mean the same thing or vice versa.
Either way, Keep up the good work. I hope to see you empower yourself and grow stronger every day.
Hail Father SATAN Forever