* Sky: The sky is what we see when we look up from Earth. It's the atmosphere, which is a layer of gases surrounding our planet. The sky appears blue due to the scattering of sunlight by these gases.
* Space: Space refers to the vast emptiness beyond Earth's atmosphere. It contains stars, planets, galaxies, and other celestial objects.
Think of it this way:
* The sky is like the ceiling of a room. It's the layer above us.
* Space is like the rest of the house. It's everything beyond the ceiling.
So, while the sky is part of space, it's not the whole thing. We see the sky because we are inside it, but space continues infinitely beyond what our eyes can see.