Portuguese 
English 
Spanish 
3 min of reading 
0 comments 
At The Top Of A Mountain In The Atacama, The Dome Of The Extremely Large Telescope (ELT) Takes Shape, A Monumental Project That Will Allow Humanity To Search For Life On Other Planets And Unravel The Greatest Mysteries Of The Cosmos.
In The Heart Of The Atacama Desert, In Chile, A Giant Of Steel And Glass Is Rising Towards The Stars. New Images Released By The European Southern Observatory (ESO) Reveal The Impressive Progress Of The Construction Of The Largest Telescope In The World In The Middle Of The Desert, Impressing With Its Scale And Complexity. This Is The Extremely Large Telescope (ELT), A Project That Promises To Revolutionize Astronomy And Our Understanding Of The Universe.
Located At The Top Of Cerro Armazones, At Over 3,000 Meters Above Sea Level, The ELT Will Be The “Largest Eye Of The World Turned To The Sky”. When It Comes Into Operation, Expected In 2028, It Will Be Able To Capture 100 Million Times More Light Than The Human Eye, Allowing Scientists To Analyze The Atmosphere Of Exoplanets In Search Of Signs Of Life And Observe The First Galaxies That Formed After The Big Bang.
A Monumental Dome In The Desert
The Latest Images Of The Construction Show The Rapid Progress Of The Dome, A Colossal Structure That, When Completed, Will Have A Diameter Of 85 Meters And Weigh 6,100 Tons. Inside It, The Complex Lattice Structure That Will Support The Primary Mirror Is Already Being Assembled, A Work Of Precise Engineering Designed To Move Hundreds Of Tons With The Necessary Smoothness To Follow The Movement Of The Stars.
-
Brazil’s first modern road cut through the Serra do Piloto, was only 22 km long, and carried tons of coffee to the coast: learn about the imperial work that paved the way for the national road infrastructure
-
A new 30-meter-high bridge will cross one of Brazil’s largest rivers and create the largest permanent road connection in the Lower São Francisco; the R$ 207 million Novo PAC project has already reached 50% completion and is scheduled for delivery in December 2026, ending decades of reliance on ferries and boats.
-
The 13.3 km Sunkoshi Marin Tunnel broke through the Himalayas 11 months ahead of schedule with a 6.4-meter TBM, paving the way to irrigate 122,000 hectares in Nepal, generate 31 MW, and transform a dry region into a new agricultural frontier.
-
China excavated 664 km through the mountains of Yunnan, placed 612 km of tunnels in the country’s largest water diversion project under construction, and opened a new route to bring water from the Jinsha River to cities, industries, and agricultural areas choked by drought.
The Giant 39 Meter Eye
The Heart Of The ELT Will Be Its System Of Five Mirrors, With The Primary Mirror (M1) Being The Centerpiece. Composed Of 798 Hexagonal Segments, It Will Form A Reflective Surface With 39 Meters In Diameter, The Largest Ever Built For An Optical Telescope.
This “Eye” Giant Will Collect Light From Distant Objects And Reflect It To A Secondary Mirror (M2) Of 4.25 Meters — Which By Itself Is Already The Largest Convex Mirror Ever Made. Together, They Will Allow A Image Quality 16 Times Sharper Than That Of The Hubble Space Telescope.
What Will The Largest Telescope In The World Search For?
The Construction Of The Largest Telescope In The World In The Middle Of The Desert Impresses Not Only With Its Engineering But Also With Its Scientific Goals. The ELT Was Designed To Answer Some Of The Most Fundamental Questions In Science:
Are We Alone In The Universe? The Telescope Will Be Able To Analyze The Chemical Composition Of The Atmosphere Of Rocky Planets Orbiting Other Stars, Looking For Biosignatures Such As Oxygen And Methane That Could Indicate The Presence Of Life.
How Did The Universe Begin? By Observing The Most Distant Galaxies, The ELT Will Function As A “Time Machine”, Capturing Light That Has Traveled For Billions Of Years And Showing Us What The First Stars And Galaxies Were Like.
What Is The Nature Of Dark Matter And Dark Energy? The Telescope Will Measure The Acceleration Of The Universe’s Expansion With Unprecedented Precision, Helping To Unravel The Mysteries Of Dark Energy, Which Composes The Bulk Of The Cosmos.
Follow The Construction Live
For Astronomy Enthusiasts, The ESO Offers The Opportunity To Follow The Progress Of The Work In Real Time. Cameras Installed On Site Transmit Images 24 Hours A Day, Allowing Anyone, From Anywhere In The World, To Witness History Being Built.
The Construction Of The Largest Telescope In The World In The Middle Of The Desert Impresses And Is A Testament To Human Capability To Seek Knowledge. When The First Light Of The ELT Arrives In 2028, A New Window To The Universe Will Be Opened.
And You, What Impresses You Most About This Project? Which Mystery Of The Universe Would You Like The ELT To Help Unravel? Leave Your Opinion In The Comments!
Be the first to react!