Astronomy is the science that deals with the study of the stars of the cosmos, especially the laws that govern its movement. In ancient times, astronomy and astrology were two inseparable sciences and, since then, astronomy has had many famous people.

Astronomers study the structure and evolution of stars, planets, galaxies and other stellar objects. Although it began with the simple visual observation of planets and stars, astronomy currently shares its experimental techniques and objects of study with other areas of science, among which geology and climatology, physics, electronics and astronautics.

In this section you will find the biographies of some famous people whose work has been fundamental in the history of astronomy. But not only that: there are also biographies of mathematicians and physicists, as well as other scientists whose work has been fundamental throughout history and whose achievements determine our way of life.

**Biographies:**

**Antiquity and Middle Ages**- Thales of Miletus and the wise men of antiquity
- Anaximander, creator of
*apeiron* - Pythagoras and geocentrism
- Democritus of Abdera and the "atomic theory"
- Eudoxo of Cnido and the spheres
- Aristotle: philosophy and round Earth
- Euclid, the father of geometry
- Aristarchus: magnitudes and distances of the Sun and the Moon
- Eratosthenes and the measurement of the Earth's sphere
- Hipparchus, the measure of the year and a catalog of stars
- Claudio Ptolemy and the theory of the spheres
- Al-Battani and the Arab astronomy of the Middle Ages
- Muhammad Al-Idrisi and the
*Roger's book* - Leonardo of Pisa and the
*Fibonacci succession* - Regiomontanus and the reform of the calendar
**The Renaissance of Astronomy**- Nicholas Copernicus and heliocentric theory
- Tycho Brahe and the firmament measures
- Giordano Bruno, martyr of heliocentric ideas
- Galileo and the telescope: the new astronomy
- Kepler and the orbits of the planets
- Christopher Scheiner and sunspots
- René Descartes, "I think, then I exist"
- Giovanni Battista Hodierna and deep space
- Johannes Hevelius and the stellar positions
- Cassini, Saturn and the distances in the Solar System
- Christian Huygens and the wave theory of light
**Modern astronomy**- Newton and the laws of dynamics (celestial mechanics)
- Halley and the orbits of comets
- Messier: catalogs of nebulae and star clusters
- Lagrange and Mathematics in Astronomy
- William Herschel and stellar astronomy
- Laplace and planetary movements
- Olbers, comets, asteroids and a paradox
- Alexander von Humboldt: Modern Geography
- Bessel and the distances to the stars
- Anders Jonas Angstrom and solar spectroscopy
- Léon Foucault and the rotation of the Earth
- Percival Lowell and the Mars channels
**20th century astronomers (I)**- Tsiolkovsky and astronautics
- Max Planck and quantum theory
- Annie Jump Cannon and the spectral classes of stars
- Henrietta Leavitt and the variable stars (Cepheids)
- Pedro Paulet Mostajo, pioneer of the space age
- Walter S. Adams and spectroscopy
- Einstein, relativity and the nature of light
- Goddard and his rocket study
- Arthur Eddington and the energy of the stars
- Erwin Schrödinger and wave mechanics
- Hubble and the expansion of the Universe
- Milton Lasalle Humason, Hubble's best assistant
- Hermann Julius Oberth and the rockets
**20th century characters (II)**- Jan Hendrik Oort and the comet cloud
- Heisenberg and the uncertainty principle
- George Gamow and atomic energy
- Clyde Tombaugh and the discovery of Pluto
- Sergey Koroliov, a Soviet genius
- Wernher von Braun, a German in the United States
- Joan Oró and the origin of life
- Antony Hewish and the pulsars
- Allan Rex Sandage, clusters and contraction in the Universe
- Arno Penzias and the cosmic background radiation
- Carl Sagan and the popular science
- Valentina Tereshkova, the first cosmonaut
- Stephen Hawking, holes and time history
- Susan Jocelyn Bell Burnell and the Pulsars
**Physicists, astrophysicists and mathematicians**- Archimedes, geometry and machines
- Al-Khwarizmi, algebra and algorithms
- Pierre de Fermat and his famous Theorem
- Blaise Pascal, pressure and calculators
- Gottfried Wilhelm Leibniz, a universal genius
- Leonhard Euler and pure mathematics
- Carl Friedrich Gauss and applied mathematics
- Michael Faraday and electromagnetism
- Marie Curie and the radiation
- Ernest Rutherford and atomic physics
- Niels Bohr, father of the atomic bomb
- Enrico Fermi and the first nuclear reactor
- John von Neumann, nuclear energy and computers
- Oppenheimer, director of the Manhattan Project
**Scientists who changed history**- Leonardo da Vinci, the genius of the Renaissance
- Antoine-Laurent de Lavoisier and modern chemistry
- Charles Darwin and evolution
- Gregor Mendel and the laws of inheritance
- Louis Pasteur, father of modern microbiology
- Dmitri Mendeleev and the periodic table
- Santiago Ramón y Cajal studied nerve cells
- Guglielmo Marconi, inventor of the radio
- Severo Ochoa, RNA and DNA