Light pollution reduction (LPR) filters function by selectively blocking specific wavelengths of light emitted by certain artificial sources, such as high-pressure sodium streetlights, which ...

Here is everything I saw with a smart telescope in a light-polluted city including galaxies, nebulas and star clusters.

Excessive artificial light at night (ALAN) harms ecosystems and human health. LED lights, while energy-efficient, often produce excessive blue light, worsening ALAN. Properly designed outdoor lighting ...

Sacramento is one of California’s most light polluted cities. The Bortle scale is a nine-level numeric scale measuring the night sky's brightness of specific locations with one being perfect ...

Earth's satellite problem is only getting worse as time goes on and more satellites are sent into orbit. One of the chief issues with the number of satellites in orbit is how much they can affect our ...

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 ...

The effects of a proposed green-energy facility in Chile could be devastating for some of the most powerful instruments available to astronomers. A massive green hydrogen plant proposed for ...

In recent developments, astronomers have raised concerns regarding a renewable energy project in Chile that threatens the world's most renowned astronomical observatories. The location is in Mount ...