Inventions & discoveries: C
45 inventions and discoveries
| Invention or discovery | Date | Inventor or discoverer | Type |
|---|---|---|---|
| C/1769 P1 | August 8, 1769 | Charles Messier | non-periodic comet |
| C/1861 J1 | May 13, 1861 | John Tebbutt | non-periodic comet |
| C/1892 E1 (Swift) | March 6, 1892 | Lewis A. Swift | non-periodic comet |
| C/1898 L1 (Coddington-Pauly) | June 10, 1898 | Edwin Foster Coddington | non-periodic comet |
| C/1907 L2 (Daniel) | June 9, 1907 | — | non-periodic comet |
| C/1957 U1 (Latyshev–Wild–Burnham) | October 16, 1957 | Paul Wild | non-periodic comet |
| C/2001 Q4 | August 24, 2001 | Near-Earth Asteroid Tracking | hyperbolic comet |
| C/2004 F4 (Bradfield) | March 23, 2004 | William A. Bradfield | non-periodic comet |
| C/2006 M4 | June 20, 2006 | Michael Mattiazzo | hyperbolic comet |
| C/2007 E2 | March 15, 2007 | Terry Lovejoy | non-periodic comet |
| C/2007 W1 | November 20, 2007 | Andrea Boattini | non-periodic comet |
| C/2010 X1 (Elenin) | December 10, 2010 | Leonid Elenin | non-periodic comet |
| C/2011 L4 | June 6, 2011 | Pan-STARRS | non-periodic comet |
| C/2014 UN₂₇₁ (Bernardinelli-Bernstein) | October 20, 2014 | Pedro H. Bernardinelli | non-periodic comet |
| C/2018 N2 (ASASSN) | July 7, 2018 | All Sky Automated Survey for SuperNovae | non-periodic comet |
| C/2020 S3 (Erasmus) | September 17, 2020 | Nicolas Erasmus | non-periodic comet |
| C/2021 A1 (Leonard) | January 3, 2021 | Gregory J. Leonard | non-periodic comet |
| C/2021 O3 (PanSTARRS) | July 26, 2021 | Pan-STARRS | hyperbolic comet |
| C/2021 T4 | October 7, 2021 | Mount Lemmon Survey | hyperbolic comet |
| Cadmium | 1817 | Karl Samuel Leberecht Hermann | chemical element |
| Caelum | 1750 | Nicolas Louis de Lacaille | constellation |
| Caesium | 1860 | Gustav Kirchhoff | lithophile element |
| Caffenol | 1995 | Scott A. Williams | photographic developer |
| Campus board | 1988 | Wolfgang Güllich | rock and sport climbing equipment |
| Cape Northrop | December 20, 1928 | Hubert Wilkins | peninsula |
| Carbon chauvinism | 1973 | Carl Sagan | hypothesis |
| Carina | 1763 | Nicolas Louis de Lacaille | constellation |
| Cha 110913-773444 | 2004 | Kevin Luhman | low-mass star |
| Chamaeleon | 1597 | Petrus Plancius | constellation |
| Charcot Island | January 11, 1910 | Jean-Baptiste Charcot | island |
| Chicken nugget | 1950 | Robert C. Baker | — |
| Circinus | 1756 | Nicolas Louis de Lacaille | constellation |
| Cistercian numerals | 1300 | Cistercians | positional numeral system |
| CNEOS 2014-01-08 | January 8, 2014 | Avi Loeb | meteoroid |
| Collapsible seat | 1917 | Armando Salati | sanitary engineering |
| Comet IRAS–Araki–Alcock | April 25, 1983 | George Alcock | non-periodic comet |
| Comet Machholz | August 27, 2004 | Donald Machholz | non-periodic comet |
| Comet Pojmański | January 2, 2006 | Grzegorz Pojmański | non-periodic comet |
| Coves del Fem | 1977 | Marc Boada Ferrer | cave |
| Crab Nebula | 1731 | John Bevis | supernova remnant |
| Crispine Cave | February 16, 1910 | Stanislas Clastrier | cave |
| Cross-polarization | 1973 | John S. Waugh | — |
| Cuirasse Decauville | 1911 | Decauville | — |
| Cyme laeta | 2021 | Noortje Looijenga | taxon |
| Čech cohomology | 1927 | Pavel Aleksandrov | cohomology |