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Galileo Galilei

Notable Trials

Knowledge panel

Occupation

Notable Trials

Born in

Pisa

Born

February 15, 1564

Zodiac

Aquarius

28,453

days lived

77

age at death

Born
February 15, 1564 in Pisa
Died
January 8, 1642 in Arcetri (aged 77)
ResidencePisa
Zodiac
♒︎Aquarius·rat 🐀
Updated Jul 2026

About

Galileo di Vincenzo Bonaiuti de' Galilei, commonly referred to as Galileo Galilei or mononymously as Galileo, was an Italian astronomer, physicist, and engineer, sometimes described as a polymath. He was born in the city of Pisa, then part of the Duchy of Florence. Galileo has been called the father of observational astronomy, modern-era classical physics, the scientific method, and modern science.

Birth Chart

Natal Chart

Galileo's Birth Chart

Astrology
♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎☉☽☿♀♂♃♄⛢♆♇
Fire
Earth
Air
Water
☉

Sun Sign

Aquarius♒︎

☽

Moon Sign

Sagittarius♐︎

Dominant Element

Air

⚠️ Rising sign requires birth time for accurate calculation

Planetary positions calculated for February 15, 1564

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Notable Trials

Day Lookup ToolDay MilestonesOn This Day
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⚡ Timeline
1642
Day 28,452
Age 77

Death of Galileo Galilei

Confidence
96%
Jan 8, 1642

Galileo Galilei dies in Arcetri, near Florence, Italy.

1633
Day 25,330
Age 69

Confined to his home

Confidence
98%
Jun 22, 1633
Day 25,259
Age 69

Trial by the Inquisition

Confidence
98%
Apr 12, 1633
1632
Day 24,792
Age 67

Dialogue Concerning the Two Chief World Systems

Confidence
96%
Jan 1, 1632

Publishes 'Dialogue Concerning the Two Chief World Systems'.

1615
Day 18,583
Age 50

Letter to Grand Duchess Christina

Confidence
96%
Jan 1, 1615

Writes about science and religion.

1613
Day 17,853
Age 48

Observations of sunspots

Confidence
96%
Jan 1, 1613

Publishes observations of sunspots.

1612
Day 17,849
Age 48

Discovery of Neptune (unrecognized)

Confidence
96%
Dec 28, 1612

First recorded observation of Neptune, but not recognized as a planet.

1610
Day 16,816
Age 46

Sidereus Nuncius (Starry Messenger)

Confidence
96%
Mar 1, 1610

Publishes 'Sidereus Nuncius' detailing telescopic observations.

Day 16,763
Age 45

Observations of Jupiter's moons

Confidence
96%
Jan 7, 1610

Discovers the four largest moons of Jupiter.

Day 16,757
Age 45

Moves to Florence

Confidence
92%
Jan 1, 1610
1609
Day 16,392
Age 44

Telescope Improvements

Confidence
96%
Jan 1, 1609

Improved the telescope, leading to astronomical discoveries.

1600
Day 13,104
Age 35

Fathering of illegitimate children

Confidence
96%
Jan 1, 1600

Has three children with Marina Gamba: Virginia, Livia, and Vincenzo.

1592
Day 10,182
Age 27

Professor at Padua

Confidence
92%
Jan 1, 1592
1583
Day 6,895
Age 18

Studies at the University of Pisa

Confidence
96%
Jan 1, 1583

Enrolls at the University of Pisa to study medicine.

1581
Day 6,165
Age 16

Withdraws from medical studies

Confidence
96%
Jan 1, 1581

Withdraws from medical studies, pursues mathematics and philosophy.

1564
Day 0
Age 0

Birth of Galileo Galilei

Confidence
96%
Feb 15, 1564

Born in Pisa, Italy.