en.wikipedia.org/wiki/Hipparchus

**Hipparchus of Nicaea** was a Greek astronomer, geographer, and mathematician.
He is considered the founder of trigonometry but is most famous for his ...

www-groups.dcs.st-and.ac.uk/history/Biographies/Hipparchus.html

Little is known of **Hipparchus's** life, but he is known to have been born in **Nicaea**
in Bithynia. The town of **Nicaea** is now called Iznik and is situated in ...

www.britannica.com/biography/Hipparchus-Greek-astronomer

**Hipparchus**, also spelled Hipparchos (born , **Nicaea**, Bithynia [now Iznik, Turkey]
—died after 127 bc , **Rhodes**?), Greek astronomer and mathematician who ...

www.sites.hps.cam.ac.uk/starry/hipparchus.html

**Hipparchus** was born in **Nicaea** in Bithynia, but spent much of his life in **Rhodes**.
He is generally considered to be one of the most influential astronomers of ...

abyss.uoregon.edu/~js/glossary/hipparchus.html

**Hipparchus of Rhodes**: Hipparchus, (b. Nicaea, Bithynia--d. after 127 BC,
Rhodes?), Greek astronomer and mathematician who discovered the precession
of the ...

www.myastrologybook.com/Hipparchus-Hipparchos-of-Rhodes-astronomer.htm

Hipparchos/**Hipparchus of Rhodes**, ancient Greek astronomer, invented
trigonometry, calculated distance and sizes of Sun and Moon and length of year.

www.newworldencyclopedia.org/entry/Hipparchus_(astronomer)

Feb 24, 2014 **...** There is a strong tradition that **Hipparchus** was born in **Nicaea** (Greek Νικαία), in
the ancient district of Bithynia (modern-day Iznik in province ...

www2.stetson.edu/~efriedma/periodictable/html/Hs.html

Little is known of **Hipparchus's** life, but he is known to have been born in **Nicaea**
in Bithynia. Only one work by **Hipparchus** has survived, and this is certainly not ...

www.ancient.eu/Hipparchus_of_Nicea

Apr 2, 2013 **...** **Hipparchus** of Nicea (190 BCE - 120 BCE) was an ancient Greek mathematician,
astronomer and geographer, regarded by many historians as ...