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Developed the law of universal gravitation and the three laws of motion.

Proposed the existence of dark matter and neutron stars.

Proposed the Big Bang theory of the origin of the universe.

Discovered the first radio pulsars in 1967.

Pioneered techniques for the discovery of exoplanets in the region of their host stars known as the habitable zone.

Discovered the planet Uranus and infrared radiation.

Discovered the relation between the luminosity and the period of Cepheid variable stars.

Discovered that stars are composed mainly of hydrogen and helium.

Provided the first empirical test of Einstein's theory of general relativity.

Predicted the return of the comet that was later named after him.

Formulated the Chandrasekhar limit, the maximum mass of a stable white dwarf star.

Made precise astronomical observations that were the basis for Kepler's laws.

Popularized science and astronomy through books and the television series 'Cosmos'.

Developed the Harvard Classification Scheme, organizing stars based on their temperatures.

Discovered cosmic radio waves and is considered the father of radio astronomy.

Confirmed the existence of dark matter through her work on galaxy rotation rates.

Proposed the Heliocentric model of the universe.

Demonstrated the expansion of the universe.

One of the earliest known astronomers, credited with the invention of trigonometry.

Known for creating a scale to describe the quality of seeing conditions for astronomical observation.

Made pioneering observations that supported the Copernican theory.

Created a common designation system for stars and discovered the Horsehead Nebula.

Formulated the three laws of planetary motion.

Known for discovering many trans-Neptunian objects (TNOs), including the dwarf planet Eris.