"It's important to bring things back from the Space Station because, unlike somebody living at the house where the garbage truck comes by twice a week, they don't have that in space"

This quote by Mark Kelly highlights the significance of bringing items back from the Space Station. He is highlighting the fact that the Space Station does not have the exact same amenities as a house on Earth. For example, a house in the world has a garbage truck that visits twice a week to take away the trash. However, this is not the case in area. Therefore, it is necessary to bring products back from the Space Station in order to avoid needing to deal with the accumulation of waste. This quote likewise serves as a pointer of the distinctions between life in the world and life in space. It is a pointer that the Space Station is a distinct environment that needs special factors to consider.