Atheists do have some deep basic convictions. When science does in no way contradict these basic convictions of them, they are whole-heartedly with science. However if any scientific theory contradicts in any way any single basic conviction of them, they do not hesitate to go against science.
The two most basic convictions of the atheists are:
• There is nothing supernatural; and
• Whatever exists, exists within space-time only. So nothing can exist outside space-time.