Universe: About 13.8 billion years ago.Solar System: About 4.6 billion years ago.
More details at the Wikipedia articles "Age of the Universe" and "Age of the Earth". The details include a discussion about the evidence.
The universe was already vast when the Sun and our solar system formed about 4.6 billion years ago. The exact size of the universe at that time is difficult to quantify, but it was significantly larger than the scale of our local solar system.
About 9 to 12 billion years old
The definition of "universe" is "everything". That includes the solar system Since the solar system is a part of the universe, and since there is other stuff in addition to the solar system, and since there is nothing more in addition to the universe, we can see that the universe is bigger than the solar system.
When the Moon was formed, the Solar System WAS already a solar system.
None.
There is no such thing. The Universe is much bigger than the Solar System - and there is only one Universe, at least only one that we know of.
Planet Solar System Galaxy Universe
Universe >> Milky Way galaxy >> Solar System > Sun >> Earth
Universe, galaxy,nebula,solar system, star, planet
They are in all three. Planets are in solar systems. There are lots of solar systems in a galaxy. There are lots of galaxies in the universe. So any planet is in a solar system, a galaxy and the universe.
The solar system...
No