Diagram For Milky Way. 8 formerly 9 planets with about 210 known planetary satellites moons. The milky way is a spiral galaxy comprised of a bar shaped core region surrounded by a flat disk of gas dust and stars about 120000 light years wide.
A galaxy is a gravitationally bound system of stars stellar remnants interstellar gas dust and dark matter. The solar system is larger than the milky way. The planets in our solar system.
The solar system is one of many such systems in the milky way.
And vast reaches of highly tenuous gas and dust known as the interplanetary medium. In this diagram you can more clearly see the 4 major spiral arms of the milky way. The most common answer seems to be that there are 100 billion stars in the milky way on the low end and 400 billion on the high end. Returning to the image of the milky way that we studied before the wire frame halo is actually meant to represent the extent of the dark matter halo.