Scientific American5 天
World’s Largest Telescope Faces a New Dire Threat: Light Pollution from Renewable Energy
Paranal’s facilities, however, should soon be outclassed by ESO’s under-construction $1.5-billion Extremely Large Telescope, or ELT, which boasts a light-gathering primary mirror nearly 40 ...
The Washington Post23 天
A rare look at NASA’s next sharp-eyed space telescope
The next great space telescope will study distant galaxies ... Southern Observatory completes what is called the Extremely Large Telescope on a mountaintop in Chile, with first light expected ...