Uploaded May 2026 | Updated September 2026, 2 weeks ago
Did Galileo Galilei pray before doing science? A newly studied copy of Ptolemy’s Almagest may suggest exactly that.
Historians recently uncovered handwritten notes, annotations, and even Psalm 145 inside a Renaissance-era copy of The Almagest believed to have belonged to Galileo himself. The notes appear to date from around 1590—nearly two decades before his groundbreaking telescope observations of the Moon and Jupiter.
According to researcher Salvatore Malara, the annotations reveal a young Galileo who both admired and critically examined Ptolemy’s cosmic model. Rather than rejecting traditional astronomy outright, Galileo seems to have mastered its mathematical logic so deeply that he eventually concluded a heliocentric system explained the heavens more accurately than Earth-centered cosmology.
This challenges the common portrayal of Galileo as someone driven mainly by philosophy, politics, or rebellion against authority. Historians now suggest his revolutionary ideas may have emerged from careful mathematical study of the very system he later overturned.
The most surprising detail was the handwritten transcription of Psalm 145—a biblical prayer praising God’s greatness. Malara later found historical references claiming Galileo prayed before studying Ptolemy, including a 1673 letter stating he offered prayers each time he sat down with The Almagest.
Handwriting experts and Galileo scholars have since supported the attribution of the notes to Galileo, pointing to matching writing styles, abbreviations, and similarities with his later works.
The discovery paints a far more complex image of Galileo: not simply a scientist opposing religion, but a thinker whose faith, mathematics, and astronomy may have been deeply intertwined.
Did Galileo Galilei pray before doing science? A newly studied copy of Ptolemy’s Almagest may suggest exactly that.
Historians recently uncovered handwritten notes, annotations, and even Psalm 145 inside a Renaissance-era copy of The Almagest believed to have belonged to Galileo himself. The notes appear to date from around 1590—nearly two decades before his groundbreaking telescope observations of the Moon and Jupiter.
According to researcher Salvatore Malara, the annotations reveal a young Galileo who both admired and critically examined Ptolemy’s cosmic model. Rather than rejecting traditional astronomy outright, Galileo seems to have mastered its mathematical logic so deeply that he eventually concluded a heliocentric system explained the heavens more accurately than Earth-centered cosmology.
This challenges the common portrayal of Galileo as someone driven mainly by philosophy, politics, or rebellion against authority. Historians now suggest his revolutionary ideas may have emerged from careful mathematical study of the very system he later overturned.
The most surprising detail was the handwritten transcription of Psalm 145—a biblical prayer praising God’s greatness. Malara later found historical references claiming Galileo prayed before studying Ptolemy, including a 1673 letter stating he offered prayers each time he sat down with The Almagest.
Handwriting experts and Galileo scholars have since supported the attribution of the notes to Galileo, pointing to matching writing styles, abbreviations, and similarities with his later works.
The discovery paints a far more complex image of Galileo: not simply a scientist opposing religion, but a thinker whose faith, mathematics, and astronomy may have been deeply intertwined.
