![Sharon Backhouse on Twitter: "The world's largest telescope has been closed for 22 days (Gran Telescopio Canarias (GTC): “the ash from the La Palma volcano is "like blades" that could damage the Sharon Backhouse on Twitter: "The world's largest telescope has been closed for 22 days (Gran Telescopio Canarias (GTC): “the ash from the La Palma volcano is "like blades" that could damage the](https://pbs.twimg.com/media/FBzbC6ZWQAM3O-_.jpg)
Sharon Backhouse on Twitter: "The world's largest telescope has been closed for 22 days (Gran Telescopio Canarias (GTC): “the ash from the La Palma volcano is "like blades" that could damage the
![Outside / inside view of the Gran Telescopio CANARIAS (GTC). Credits:... | Download Scientific Diagram Outside / inside view of the Gran Telescopio CANARIAS (GTC). Credits:... | Download Scientific Diagram](https://www.researchgate.net/profile/Jorge-Sanchez-Almeida/publication/342706858/figure/fig1/AS:910142992285701@1594006407907/Outside-inside-view-of-the-Gran-Telescopio-CANARIAS-GTC-Credits-ING-and_Q320.jpg)
Outside / inside view of the Gran Telescopio CANARIAS (GTC). Credits:... | Download Scientific Diagram
![Gran Telescopio Canarias, GranTeCan, GTC, the world's largest mirror telescope, Observatorio Astrofisico, astronomy, astrophysic Stock Photo - Alamy Gran Telescopio Canarias, GranTeCan, GTC, the world's largest mirror telescope, Observatorio Astrofisico, astronomy, astrophysic Stock Photo - Alamy](https://c8.alamy.com/comp/BHFE10/gran-telescopio-canarias-grantecan-gtc-the-worlds-largest-mirror-telescope-BHFE10.jpg)
Gran Telescopio Canarias, GranTeCan, GTC, the world's largest mirror telescope, Observatorio Astrofisico, astronomy, astrophysic Stock Photo - Alamy
![COVID-19 Forces Earth's Largest Telescopes to Close. But a Few Isolated Astronomers Are Still Watching Over the Cosmos | Discover Magazine COVID-19 Forces Earth's Largest Telescopes to Close. But a Few Isolated Astronomers Are Still Watching Over the Cosmos | Discover Magazine](https://images.ctfassets.net/cnu0m8re1exe/4WpD4yQxO8okTrC0vixyc9/4f76c31b0c1d7ec11502c1abea6f267c/Gran_Telescopio_Canarias_telescope.jpg)
COVID-19 Forces Earth's Largest Telescopes to Close. But a Few Isolated Astronomers Are Still Watching Over the Cosmos | Discover Magazine
![The Gran Telescopio CANARIAS GTC, Roque de los Muchachos Observatory, La Palma, Canary Islands, Stock Photo, Picture And Rights Managed Image. Pic. B20-1736294 | agefotostock The Gran Telescopio CANARIAS GTC, Roque de los Muchachos Observatory, La Palma, Canary Islands, Stock Photo, Picture And Rights Managed Image. Pic. B20-1736294 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/0144ec4b35b65209e313b24f95443e8d/b20-1736294.jpg)