Nougat
Mars and Earth are planets in a galaxy called the Milky Way, inside the universe.
The mantle
Formaldehyde
The gooey stuff in a pumpkiin is called the pulp or,meat.
no you can not
The sticky stuff inside balloons is called balloon lubricant or powder. It helps prevent the sides of the balloon from sticking together or to itself when inflated, making it easier to inflate the balloon.
The green gooey stuff inside a leaf is called chlorophyll. It is a pigment that helps plants absorb sunlight and convert it into energy through the process of photosynthesis.
Chocolate crunchies
You haven't said what exactly Mars may be inside or outside of; certainly it is inside our solar system. It is farther from the sun than the planet Earth and therefore it could be described as being outside the Earth's orbit. Comment: Mars is called an "inner planet", of course. Perhaps that helps.
Rocks and The Mars Rovers are on the surface of the planet Mars.
Nothing