Humanity is created in the image of God, and lives in a reality (or world) created by God, therefore humanity is not excused, rather condemned for denying the existence of God (i.e. the existence of earth, stars, sun, moon, heavens, intelligent design, the complexity of every biological life-form, etc.), therefore, man is without excuse.
The evidence for God is literally everywhere.
In the southern sky, God placed the cross (the Southern Cross constellation) for people to see nightly – a “light-sign” from God to man: “There is a God.” In the northern sky, God nightly demonstrates His existence by the northern lights.
In addition, the objects that fill the heavens proclaim God. All of creation shouts, “God!” History books and the Bible record the Christ and His cross-death for humanity. Believe!