Here's why:
* Science doesn't address creation: Science explores the natural world through observation, experimentation, and the scientific method. It doesn't deal with questions of creation or the existence of deities.
* Different religions have different creation stories: Different religions and denominations have different accounts of how the world and sky came to be. These stories are based on faith and tradition, not empirical evidence.
* The sky is a natural phenomenon: Scientifically, the sky is a result of the Earth's atmosphere and the scattering of sunlight.
If you are interested in exploring the different creation myths and beliefs, you might find it helpful to read about the creation stories in various religions, like:
* Genesis (Judaism and Christianity): This story describes God creating the world, including the sky, over a period of six days.
* Hinduism: In Hinduism, the universe is believed to be eternal and cyclical, with the sky being part of the cosmic order.
* Norse Mythology: The Norse creation myth involves the creation of the world by the gods, with the sky being formed from the skull of a giant.
Ultimately, the question of when God invented the sky is a matter of personal faith and belief.