Light Pollution From Elon Musk’s Starlink Continues To Harm Astronomy

(Mis)Uses of Technology

from the who-needs-to-see-the-big-dipper-anyway dept

For years, scientific researchers have warned that Elon Musk’s Starlink low Earth orbit (LEO) satellite broadband constellations are harming scientific research. Simply put, the light pollution Musk claimed would never happen in the first place is making it far more difficult to study the night sky, a problem researchers say can be mitigated somewhat but never fully eliminated.

And it appears to be getting worse as Musk (and other companies, like Amazon) launch more LEO satellites. A new study (hat tip, Gizmodo) found that all of the launched satellites exceed brightness limits established by the International Astronomical Union’s (IAU) Center for the Protection of the Dark and Quiet Sky (CPS), harming scientists’ ability to conduct scientific research:

“Although there are no official regulations in place, the CPS established recommendations for maximum acceptable brightness for satellites orbiting below 341 miles (550 kilometers). The IAU established a maximum brightness of +7 magnitude for professional astronomy and below +6 magnitude as the aesthetic reference so it does not impact the public’s ability to stargaze without interference from satellites.”

Again, it’s worth reiterating that Musk initially stated this would never be a problem. While the study found that the brightness levels of Starlink satellites have improved some, the lower orbiting altitude of some of the newer Starlink satellites means the brightness impact is actually worse.

Despite Musk’s endless whining about “burdensome regulations,” the U.S. doesn’t really regulate this sort of thing. And the damage goes well beyond astronomy.

Last June scientists warned that low-Earth orbit (LEO) satellites constantly burning up in orbit could release chemicals that could undermine the progress we’ve made repairing the ozone layer. Researchers at USC noted that at peak, 1,005 U.S. tons of aluminum will fall to Earth, releasing 397 U.S. tons of aluminum oxides per year to the atmosphere, an increase of 646% over natural levels.

Starlink’s about to get a big boost by taxpayers, too. Republicans are rewriting the 2021 infrastructure bill to redirect billions in subsidies to Elon Musk and Starlink, despite the service’s high costs, congestion problems, and increasingly problematic environmental impact. And, of course, Starlink is just one of several emerging competitors in the LEO space, all jockeying for a huge boost in taxpayer subsidies.

Filed Under: astronomy, elon musk, leo, low earth orbit satellites, research, science, telecom
Companies: spacex, starlink