In early 2020, 40 experts came together to assess the impact of satellite constellations on astronomy and to consider possible mitigation solutions. They presented their findings for discussion at the SATCON1 workshop at the end of June… Read more

Scientists reported new research results today suggesting that artificial objects in orbit around the Earth are brightening night skies on our planet more than previously understood. The research, accepted for publication in Monthly Notices of… Read more

By: Ruskin Hartley and John Barentine  Last summer, a new phenomenon startled night-sky watchers everywhere: for the first few weeks of their operation, Starlink satellites appeared as a group of objects orbiting together, a bright… Read more

If you’ve spent time looking at the sky in the last few months, you may have noticed an increase in the number of moving objects streaming across the night sky. You’re not imagining things.  In… Read more

By Ruskin Hartley, Executive Director Protecting the night from light pollution for all living things requires bold action. Today, we call on the White House Council on Environmental Quality, and all who value the dark… Read more

Mega constellations, also known as low earth-orbit (“LEO”) satellite constellations, are webs of networked satellites that orbit the Earth at altitudes of 2,000 km or less intended to provide global telecommunications services. The brightness and… Read more

Mega constellations, also known as low earth-orbit (“LEO”) satellite constellations, are webs of networked satellites, which orbit the Earth at altitudes of 2,000 km or less. These webs of satellites are intended to offer uninterrupted… Read more

Tucson, AZ – On May 23, 2019, the spacecraft company, SpaceX launched a group of sixty satellites into low Earth orbit (LEO). Due to their reflective solar panels and other metal surfaces, the satellites are… Read more