Answer:
The answer is "dark matter and dark energy and dust".
Step-by-step explanation:
In the empty room, the universe is gases and ashes. Even though humans think the exterior universe's blank space is nothing more than empty. Fortunately, the plasma form of its hydrogen and helium gases, including the various types of dirt and debris, occupy this void vacuum. There are also several other materials however these greenhouse gases and dust particles are also the bulk of the material.