![Largest optical reflecting telescope Gran Telescopio Canarias located on grassy hilltop against cloudy sky at astronomical observatory on island of La Stock Photo - Alamy Largest optical reflecting telescope Gran Telescopio Canarias located on grassy hilltop against cloudy sky at astronomical observatory on island of La Stock Photo - Alamy](https://c8.alamy.com/comp/2DA0NC1/largest-optical-reflecting-telescope-gran-telescopio-canarias-located-on-grassy-hilltop-against-cloudy-sky-at-astronomical-observatory-on-island-of-la-2DA0NC1.jpg)
Largest optical reflecting telescope Gran Telescopio Canarias located on grassy hilltop against cloudy sky at astronomical observatory on island of La Stock Photo - Alamy
![The Gran Telescopio Canarias obtains the visible spectrum of C/2019 Q4 (Borisov), the first confirmed interstellar comet | Instituto de Astrofísica de Canarias • IAC The Gran Telescopio Canarias obtains the visible spectrum of C/2019 Q4 (Borisov), the first confirmed interstellar comet | Instituto de Astrofísica de Canarias • IAC](https://www.iac.es/sites/default/files/images/news/C2019Q5-figura%20copia2_0.jpg)
The Gran Telescopio Canarias obtains the visible spectrum of C/2019 Q4 (Borisov), the first confirmed interstellar comet | Instituto de Astrofísica de Canarias • IAC
![El GTC participa en el hallazgo de un gigantesco agujero negro que desafía los modelos actuales de evolución estelar El GTC participa en el hallazgo de un gigantesco agujero negro que desafía los modelos actuales de evolución estelar](https://tvlapalma.com/adjuntos/fichero_20989_20191128.jpg)
El GTC participa en el hallazgo de un gigantesco agujero negro que desafía los modelos actuales de evolución estelar
![The Gran Telescopio Canarias plays a key role in the discovery of the ring of the dwarf planet Quaoar | Instituto de Astrofísica de Canarias • IAC The Gran Telescopio Canarias plays a key role in the discovery of the ring of the dwarf planet Quaoar | Instituto de Astrofísica de Canarias • IAC](https://www.iac.es/sites/default/files/styles/color/public/images/news/Artist_impression_of_Quaoar_and_its_ring.jpg?itok=1a_BMLrc)
The Gran Telescopio Canarias plays a key role in the discovery of the ring of the dwarf planet Quaoar | Instituto de Astrofísica de Canarias • IAC
![10 years of the GTC: Amazing science with an astonishing telescope | Instituto de Astrofísica de Canarias • IAC 10 years of the GTC: Amazing science with an astonishing telescope | Instituto de Astrofísica de Canarias • IAC](https://www.iac.es/sites/default/files/styles/crop_rectangle_21x9_to_1280/public/images/news/folleto_gtc_10_aniv.jpg?h=fb815367&itok=DQTojVIl)
10 years of the GTC: Amazing science with an astonishing telescope | Instituto de Astrofísica de Canarias • IAC
![The Gran Telescopio Canarias discovers the largest cluster of galaxies known in the early universe | Instituto de Astrofísica de Canarias • IAC The Gran Telescopio Canarias discovers the largest cluster of galaxies known in the early universe | Instituto de Astrofísica de Canarias • IAC](https://www.iac.es/sites/default/files/styles/color/public/images/news/HST%20RGB%20850%20775%20606%20TIFF%20MARCAS%20OK.jpg?itok=wqD9IRsy)
The Gran Telescopio Canarias discovers the largest cluster of galaxies known in the early universe | Instituto de Astrofísica de Canarias • IAC
![The Gran Telescopio Canarias discovers the largest cluster of galaxies known in the early universe | Instituto de Astrofísica de Canarias • IAC The Gran Telescopio Canarias discovers the largest cluster of galaxies known in the early universe | Instituto de Astrofísica de Canarias • IAC](https://www.iac.es/sites/default/files/images/inline-images/GTC%20puesta%201.jpg)