Claim 1 of 9 · Case 09 · Atheism
The universe began to exist a finite time ago, which points to a cause beyond space, time, and matter.
One claim from the free evidence repository at apologetics.pro.
Modern cosmology describes a universe with a finite past that traces back to a hot, dense early state. Our argument, often called the kalam argument, runs like this. Whatever begins to exist has a cause. The universe began to exist. So the universe has a cause, and that cause must be beyond space, time, and matter, since it produced them. Honest limits: the premise that the universe began is well supported but not beyond dispute. Some cosmological models propose a bounce, a cycle, or a past with no absolute boundary. The step from “the universe has a cause” to “that cause is God” is a reasoned inference, not a proof, and it is contested. This is the best current picture and a strong inference, not a closed case.
Backed by 3 pieces of evidence
Borde, Guth, and Vilenkin, “Inflationary Spacetimes Are Incomplete in Past Directions”
This is the checkable premise the whole argument rests on: scientific grounds for a finite past, which the causal inference then builds on.
Lawrence Krauss, A Universe from Nothing
This is the leading scientific-sounding challenge to the argument, and it’s worth answering on its own terms. Notably, the reply above comes from an atheist critic, not a believer. It shows that the “no cause needed” response trades on a shifted meaning of the word nothing, which leaves the need for a cause standing.
Eternal and cyclic cosmological models
This is the honest scientific alternative, stated without overclaiming: the finite-past premise is well supported, but these are the live models that dispute it.