Webb can see very distant galaxies thanks to its huge primary mirror, which is the largest that has ever been launched into space. Telescopes are often put into space because they can sit above ...

Such a dramatic cut to a flagship space telescope still in its prime will be felt across the mission's entire operations, ...

[Andrew] summarizes things quite well: “yes… One of the world’s largest telescopes, 370 tons of steel and glass, was brought to a halt because of a bad indicator LED”. It stopped things by ...

Very Large Telescope (VLT). VLT, which cost some $350 million to build in the 1990s ($840 million in today's dollars), is one of the world's most sensitive sky-watching instruments, capable of ...

An curved arrow pointing right. In 2016, the European Southern Observatory’s Very Large Telescope achieved “first light” on its new optics system, shooting four lasers into the sky for the ...

A Chilean mountain top has been blown up to make way for the European Extremely Large Telescope, nicknamed the "world's biggest eye on the sky". Due to be completed by 2022, the telescope is being ...

The 500-Meter Aperture Spherical Telescope (FAST) is being built in China. With a dish the size of 30 football fields, it will be the largest radio telescope in the world when it is completed in 2016.

Astronomers are sounding alarm bells as the world's most precious sky-observing location faces a risk of being blinded by light pollution due to a planned renewable energy project. The U.S. energy ...

A brilliant comet waved its tail above the site of the world's largest telescope as it lit up the night sky last month. Veteran comet hunters have called G3 (ATLAS) the "Great Comet of 2025" due ...

Explore these orbiting pioneers and learn what they've discovered. 3 min read The Hubble Space Telescope was designed to free astronomers of a limitation that has plagued them since the days of ...