NASA wants to view the Big Bang with this behemoth, so it's saying goodbye to the James Webb Telescope. The new one redefines ...

Observatories in Chile’s Atacama Desert, including the world’s largest optical telescope, could be blinded by light pollution and other unwanted side effects from the proposed construction of a renewa ...

The European Southern Observatory's (ESO) Extremely Large Telescope (ELT) — the world's largest visible- and infrared-light ...

Dozens of boxes holding mirrors are placed along a remote desert hill in northern Chile as workers make progress in the ...

January's new moon means less lunar glare, so make the most of the darker skies with our expertly researched guide to the best telescopes for seeing planets. January 29's new moon, when the moon ...

SPHEREx is slated to launch Feb. 27 on a SpaceX rocket. It is meant to map the entire night sky in infrared — something even the JWST can't exactly do.

Optical sparse aperture telescopes are innovative systems designed to enhance the resolution and performance of astronomical observations. These telescopes utilize segmented mirrors, which consist ...

The telescope is expected to be the largest optical-infrared facility in the world for decades. The mirrors are ready and awaiting installation. "This is a major challenge," said Tobias Muller ...

Astronomers have taken a crucial step in showing that the most massive black holes in the universe can create their own meals ...

Katherine Laliotis is a freelance science writer and Ph.D. candidate in astrophysics. She often covers stories at the intersection of science and society.