High up in the Chilean Andes, the Extremely Large Telescope (ELT) is set to become the world's largest optical telescope and ...

The Extremely Large Telescope (ELT), now under construction in the Chilean Andes, is set to revolutionize the field of ...

The frame of the dome that will house the world's largest telescope has been completed, marking another key milestone in the observatory's construction. The European Southern Observatory's (ESO) ...

The dome enclosing the world's largest telescope is taking shape, with the installation of protective siding and supports for the primary mirror. The European Southern Observatory's (ESO) Extremely ...

Astronomers urged Chile to relocate a planned hydrogen plant, saying it could raise light pollution and affect major observatories in the Atacama Desert ...

As the largest optical telescope in the world, the ELT will allow scientists to dive further into our universe than ever before. The ELT’s 39-metre ‘eye on the sky’ will capture some of the clearest ...

Members of the research team Grace Chesmore (left) and Katie Harrington (right) open the front of the tester used to analyze the Simons Observatory Large Aperture Telescope receiver optics. CREDIT ...

More than 100 years ago, astronomer George Ellery Hale brought our two Pasadena institutions together to build what was then the largest optical telescope in the world. The Mt. Wilson Observatory ...

Using ESO’s Very Large Telescope and the W.M. Keck Observatory, astronomers at the Ecole Polytechnique Fédérale de Lausanne in Switzerland and the California Institute of Technology, USA, have ...

The Southern African Large Telescope (Salt) near Sutherland is celebrating 20 years of observing the night sky.

A new generation of extremely large telescopes requires fresh approaches to correct for the blurring effects caused by the Earth’s atmosphere, as Richard de Grijs, one of an international team of ...