It is based on logic, common sense, thinking, using brain.
Why do "Bible-people" have so much problems with logic, common sense, thinking and using brain?
That guy, Mark Isaak, who created the web page, has brought quite many good arguments. Pure logic, common sense, brain power.
Step back, and remember Galileo Galilei, who used logic, common sense and thinking to prove that all celestial objects are not rotating around the Earth (which we know today is not exactly true, cause we can say that Earth rotates around it's axes or we can say that universe rotates around the Earth, and both claims could be true, depending on what your observational point is.).
The so-called Galileo affair, in which Galileo Galilei came into conflict with the Catholic Church over his support of Copernican astronomy, is often considered a defining moment in the history of the relationship between religion and science.
If #61621 was living in the time of Galileo Galilei, you would be the one saying that earth is the centar of the universe, and all objects are rotating around the earth.
Galileo began his telescopic observations in the later part of 1609, and by March of 1610 was able to publish a small book, The Starry Messenger (Siderius Nuncius), relating some discoveries that had not been dreamed of in the philosophy of the time: mountains on the Moon, lesser moons in orbit around Jupiter, and the resolution of what had been thought cloudy masses in the sky (nebulae) into collections of stars too faint to see individually. Other observations followed, including the phases of Venus and the existence of sunspots.
None of these findings proved that the Earth moved, or directly contradicted Christian doctrine;