Street lights erase the shadows where attackers once hid. Noisy, polluting diesel generators have gone silent. New businesses ...

The Cosmic Microwave Background, also known as the earliest light of the universe, was captured through SPT-3G in the South Pole Telescope.

While the Gemini North Telescope may be at a high enough elevation to avoid light pollution, it has another issue that might ...

The scientists who precisely measure the position of Earth are in a bit of trouble. Their measurements are essential for the ...