Short answer: Science always creates more questions than it answers.
Here is a simple illustration (I am paraphrasing). Near the end of the 19th Century, the claim was going around that all of physical science (speed of light, acceleration of gravity, etc) had been completed, and what remained was to refine the numbers to more decimal digits. This idea was popular, despite the fact that radioactive materials (uranium, radium) had recently been discovered, and their properties were only very vaguely understood.
Science is basically a way of looking at the world. It has no monopoly on truth, nor even on valuable understanding. The 20th century showed clearly that powerful personalities (Stalin, Hitler, Roosevelt, Churchill, Ghandi) can persuade tens of millions of people to move in one direction. This can swamp other human activities.
The Egyptians and Greeks knew the layout of the planets, the diameter of the Sun and many other very subtle features of the solar system (like the precession of Earth's poles) long before the birth of Jesus. It was not the science, but personalities, politics and battles that caused this information to be lost for more than 1,000 years.
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