He knew that the earth was a sphere and included 48 constellations in one of his thirteen books and used the names we still use today
NASA Exceptional Scientific Achievement Medal was created on 1961-09-15.
Cleopatra
the scientific method.
The question as written makes no sense. If you mean "What was the most important Muslim scientific achievement?", see the Related Question below.
This means a scientific achievement, or hypothesis.
I think that the greatest achievement was art, science and technology.
Ptolemy's biggest discovery was his geocentric model of the universe, which believed that the Earth was at the center of the universe with planets and stars moving around it in circular orbits. This model dominated Western astronomy for over a thousand years.
you are a ideot dumb one
The heliocentric model proposed by Nicolaus Copernicus contradicted Ptolemy's geocentric model. Copernicus suggested that the Sun, rather than the Earth, was at the center of the solar system.
Watson and Crick
Calendar
Earth was the center of the universe