Creation Was Mature

Another point important to recognize is that the creation was 'mature' from its birth. It did not have to grow or develop from simple beginnings. God formed it full-grown in every respect, including even Adam and Eve as mature individuals when they were first formed. The whole universe had an 'appearance of age' right from the start. It could not have been otherwise for true creation to have taken place. 'Thus the heavens and the earth were finished, and all the host of them' (Genesis:2:1Thus the heavens and the earth were finished, and all the host of them.
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—Dr. Henry Morris (October 6, 1918 – February 25, 2006, American young Earth creationist, Christian apologist, engineer, and one of the founders of the Creation Research Society and the Institute for Creation Research).