Creation

The Bible is clear that God and God alone created the heavens and the earth, that is all created things, visible or invisible. He initially made the formless and empty world out of nothing but then he immediately proceeded to shape it and make things as he chose from what he had already created.

He deliberately did it all in six (24 hour) days in order that an example would be given and a pattern laid down for the rest of time.

The first thing to be created was light, which was separated from darkness, then the sky and then the earth and the seas.

Notably, the sun, moon and stars were not created until the fourth day. They were put there to mark time and seasons, etc. There is no reason to worship such creations.

On the fifth day the sky was populated by birds and the sea by fish and other sea creatures.

On the sixth day the land was populated first by animals and insects and similar creatures of all sorts and then by human beings.

It is clear that when God created the world it was perfect, without any flaw. There was no sin or evil or imperfection in it anywhere at all.

It is also clear that it appeared to be older than it was. Chop a tree down on day one, count the rings - the wrong answer. Measure how far a certain star is from the earth and the answer would suggest it had been in existence for aeons but that was not the case. Similarly, Adam and Eve were not babies (and also no doubt had navels). This is no deception but the way God created the world.
Creation is marked by careful design, incredible variety and diversity, wise ordering (such as a blue sky and a predominantly green plant life) loving provision (some call earth the Goldilocks planet) and clear revelation (such as the fact the rain comes from above, seeds are buried in order to grow, etc). 

Only God saw the creation and he has revealed the truth about it in his Word.