Does the Church accept the Big Bang and modern science?

Yes. The Catholic Church welcomes modern science, including the Big Bang as a serious scientific account of the universe's early development, while distinguishing scientific conclusions from revealed doctrine.

Faith and reason belong together. God is the source of both creation and human reason. Genuine discoveries about the natural world cannot contradict truths genuinely revealed by God, although interpretations of either science or Scripture can be mistaken (CCC 159). The Church encourages scientific research and recognizes that studies of the universe, life, and humanity can enrich our knowledge of creation (CCC 283). Catholics have made major contributions to astronomy, genetics, physics, medicine, and mathematics.

What the Big Bang explains. The Big Bang theory describes the universe as developing from an extremely hot, dense early state. A Catholic may accept this model. Belgian priest and physicist Georges Lemaître was one of the chief pioneers of the theory. Still, the Church has never made the Big Bang a dogma. Scientific models can be refined or replaced as evidence develops.

What creation means. Creation is a deeper claim than any physical theory. The Church teaches that God freely created everything from nothing and continually sustains it in existence (CCC 290, 296, 301). Even if physics could describe the earliest measurable instant, it would not answer why anything exists, why nature is intelligible, or why its laws exist. Creation also does not require that the universe began through a process detectable by science. God's creative act is the cause of the whole existence of the universe, not one physical event within it.

The limits of science. Science studies the natural world through observation, measurement, and testing. It cannot by itself determine whether God exists, what makes a human person sacred, or whether an action is morally good. Scientific research is a genuine good, but its methods and applications must respect the dignity of the human person and the moral law (CCC 2293-2294). Technical ability alone does not make an experiment or treatment morally permissible.

A Catholic should neither fear science nor turn it into an all-encompassing philosophy. Follow evidence carefully, reject fraud and ideology, and remember that creation points beyond physical mechanisms to the wisdom and goodness of its Creator (Rom 1:20).