How does science replace God as explanation of the world?
Transport (including planes, trains and automobiles), computers, the internet, vaccines, agriculture, gmo, electricity, radio, increased life expectancy, landing on the moon, GPS, the atom, DNA, nuclear energy. It's trivial to think of countless more examples of the explanatory power of the scientific method which have lead to real world advances in knowledge which directly effect, more or less, every single thing you do.
God on the other hand has no explanatory power. As evidence I provide nothing which was explained by God which lead to advances in knowledge.
Unknown means unknown.