Astronomer · 1643 CE – 1727 CE

Isaac Newton

History of AstronomyThe Scientific Revolution

Biography

Isaac Newton united the heavens and the Earth under a single law. His Principia (1687) showed that the same gravity that pulls an apple to the ground holds the Moon in its orbit and shapes the paths of the planets, explaining Kepler's laws from first principles. He also invented the reflecting telescope and laid the foundations of modern physics.

Scientific contributions

Formulated the law of universal gravitation
Published the Principia Mathematica (1687)
Built the first practical reflecting telescope

Major publications

Philosophiæ Naturalis Principia Mathematica1687 CE

Theories developed

Universal Gravitation1687 CE

Related scientists

Collaborator

Edmond Halley

Knowledge connections

Part ofThe Scientific Revolution
Collaborated withEdmond Halley
Collaborated withEdmond Halley
PublishedPhilosophiæ Naturalis Principia Mathematica
DevelopedUniversal Gravitation
Associated withTheory & Observation

Sources & references

The primary and reference sources this topic draws on.

BritannicaEncyclopaedia Britannica
General reference for the history of astronomy, biographies, and cultural context.
IAUInternational Astronomical Union
Official naming, definitions, constellation boundaries, and astronomical nomenclature.

Quick facts

Lifespan: 1643 CE – 1727 CE
Nationality: English
Era: The Scientific Revolution
Fields: Physics, Mathematics, Astronomy
Institutions: University of Cambridge; Royal Society
Publications: 1

Quality & authority

Substantial

Reviewed

Description: Complete
Source coverage: Complete
Relationship coverage: Complete
Review coverage: Complete
Citation coverage: Complete
Image coverage: Not applicable

Curated from authoritative reference sources. See source quality.

Provenance & sources

review 2026.1

Asteria Scientific Review Process · verification: sourced · accurate

Historical evidenceconfirmed
Isaac Newton formulated the law of universal gravitation and the three laws of motion, published in the Principia (1687), providing the physical foundation of celestial mechanics.
Source: Encyclopaedia Britannica

Reviewed by the internal Asteria Scientific Review Process — not an external institutional review. See the evidence framework and authority dashboard.

Scientific citations

Real, source-backed references — primary papers first, then datasets and institutional sources. Formatted through the citation engine; nothing is fabricated.

Historical referenceIsaac Newton — Encyclopaedia Britannica

Encyclopaedia Britannica

Cite (APA / BibTeX)

Encyclopaedia Britannica (n.d.). Isaac Newton — Encyclopaedia Britannica. Encyclopaedia Britannica. https://www.britannica.com/biography/Isaac-Newton

@misc{cite:britannica-astronomer-isaac-newton,
  title        = {Isaac Newton — Encyclopaedia Britannica},
  organization = {Encyclopaedia Britannica},
  year         = {n.d.},
  url          = {https://www.britannica.com/biography/Isaac-Newton},
  note         = {Biographical and background reference for Isaac Newton (secondary source).}
}