You can't perceive the solar system, but whatever it is you are experiencing, it exists now and you can only know about it through your senses. It doesn't necessarily follow that it existed prior to you experiencing it, it wouldn't make any sense to say that because "existence" is an experiential claim that requires someone to have the experience of it, in the present moment. Past, future, time flow are all hypotheses. You never experience time, you are only experiencing the now.

However, I'm not saying that things don't exist, it's that they do exist but not independently of the conscious agent that has the experience of them. The universe and the thinking agent that is currently perceiving that universe, come into existence simultaneously, in the act of perceiving/thinking.

The mind arises out of the necessary universe that is required for a mind that observes it to exist.

There could be infinite of other universes (or other things "out there" i can't experience), but those claims makes no sense since because for something to exist it must have a conscious agent experiencing it as existing. There can't be a universe in the void, simply rocks. Even "rock" is something that is defined by thought and can't exist independently of it.