in the #arXiv
Satellite Constellations Exceed the Limits of Acceptable Brightness Established by the IAU
by Anthony Mallama and Richard E. Cole
https://arxiv.org/abs/2507.00107
#Astronomy #NightSky #satelliteconstellations #satellites #Starlink #OneWeb
in the #arXiv
Call to Protect the Dark and Quiet Sky from Harmful Interference by Satellite Constellations
https://arxiv.org/abs/2412.08244
#Astronomy #DarkSky #constellations #satellite #satelliteconstellations #science
Are We Going to Mess Up Outer Space Too?
As nations jockey for military edge in orbit, there is a growing threat from above
by Daniel Munro Updated 8:49, Jun. 19, 2024
"Over the past decade, however, space has become much more contested and harder to govern. Nearly 1,000 private companies now offer space-based products and services. Expanding #SatelliteConstellations offer better internet access in remote and developing communities, enabling more people to access online health care, work remotely, and connect with family and friends. Space technologies also support better weather and climate monitoring, improve navigation and transportation logistics, and enhance agricultural productivity through the use of land- and water-quality sensors. All this has contributed to a space economy with an estimated value of $447 billion (US), on a trajectory to reach $1 trillion by 2030. And missions focused on exploration and scientific discovery are expanding—including the US-led Artemis program that aims to land human beings on the moon for the first time in over fifty years.
"But this new space age poses substantial risks. #OrbitalDebris from inactive satellites, discarded rocket parts, and anti-satellite #weapons tests threatens the infrastructure on which our social and economic well-being now depends, as well as the lives of astronauts working on space stations. In addition to the 30,000 objects large enough to track, there are an estimated 1 million debris fragments—between one and ten centimetres in diameter—that are too small to be picked up by ground-based radar and surveillance networks. Experts put the likelihood of future collisions between these objects at near certainty, with potential for cascading and catastrophic damage including entire satellite communication systems being taken out and larger debris fragments falling to #Earth and threatening lives and #ecosystems."
Read more:
https://thewalrus.ca/mess-up-outer-space/?utm_source=pocket-newtab-en-us
#DarkSkies #DarkSkiesForAll #KesslerSyndrome #SpaceX #SpacePollution #KesslerEffect #MegaConstellation
🛰️⚠️ Starlink & other mega satellite constellations could harm our ozone layer! 😨 A new study warns their re-entry gases deplete the ozone when burning up in the atmosphere. 🌍💨 Time to rethink our space debris?
#SpaceX
#Starlink #Environment #OzoneLayer #SatelliteConstellations
https://www.independent.co.uk/space/elon-musk-spacex-starlink-internet-b2565081.html
🤦
Protecting ALMA’s skies Whitepaper: a study of the risks posed by radio frequency interference (RFI) to ALMA today and in the near future, from both ground-based and space-based sources of radio emissions. The paper identifies the vulnerable points eof the observatory, and discusses and evaluates potential mitigation measures.
Announcement: https://www.almaobservatory.org/en/announcements/protecting-almas-skies/
Whitepaper: https://library.nrao.edu/public/memos/rfi/RFI_152.pdf
#ALMA #ALMAObservatory #RFI #darkskies #RadioFrequencyInterference #SatelliteConstellations
Since 2019 the EAS has been heavily involved in the global effort to minimise the impact of satellite constellations on astronomy
On May 7th, at 10:30 CEST leading figures in this work will come together for a special 90 mins webinar aimed at explaining our concerns, the progress we've made so far, and how you can help.
https://unige.zoom.us/webinar/register/WN_dE1LzL1QSWSbMovrFE37sQ#/registration
The Tyee: Tracking the Gold Rush in the Sky https://thetyee.ca/Analysis/2023/10/27/Tracking-Gold-Rush-Sky/ #bcnews #TheTyee - via @tyee@mstdn.ca #WhoOwnsOuterSpace?InternationalLaw,Astrophysics,andtheSustainableDevelopmentofSpace #InternationalTelecommunicationUnion #Kessler-Cour-Palaissyndrome #UniversityofBritishColumbia #anti-satelliteweapontests #communicationssatellites #satelliteconstellations #satellitesastronomy #mega-constellation #Chinaspacestation #OuterSpaceTreaty #Rwandasatellites
Unsolicited reminder that our article "A call for scientists to halt the spoiling of the night sky with artificial light and satellites" (free reading at https://rdcu.be/c727x), from Fabio Falchi, @salvabara, Pierantonio Cinzano, Martin @pawley, & yours truly, published in the March 2023 issue of @NatureAstronomy, is also available at arXiv:https://lnkd.in/dXEgkWcy
#lightpollution #poluiçãoluminosa #contaminaciónluminica #satelliteconstellations
> The Satellite Constellations 2 (SATCON2) workshop was held virtually 12–16 July 2021 to discuss how to implement the mitigation strategies that emerged from SATCON1 to minimize the negative impacts of satellite constellations on astronomy and the night sky.
https://aas.org/satellite-constellations-2-workshop
#StarLink #MegaConstellations #SatelliteConstellations #SatCon
@Doug_Bostrom
I started paying attention to orbiting light pollution thanks to Mastodon posts from #SamLawler @sundogplanets
Yeah, “creepy” is one word 😒 #starlink #satelliteconstellations #nightsky Arlo and Janis for February 21, 2023 | GoComics.com https://www.gocomics.com/arloandjanis/2023/02/21
Profit (for already giant companies) is ruining the #nightsky, putting #astronomical observations (professional and casual) in jeopardy (to refer only one aspect), with the complacency of many. Absence of regulation plus the general indifference to blame. Running fast to a “now is too late” situation.
#satelliteconstellations
https://www.reviewgeek.com/145270/amazon-will-rival-spacex-as-a-satellite-internet-company/
A suggested explanation for the huge, bright #BlueWalker3 satellite's recent dimming by Anthony Mallama, @richard_e_cole, and @coastal8049:
http://satobs.org/seesat/Dec-2022/0097.html
https://www.dropbox.com/s/qqtij35gulujfss/BW3%20Beta%20Angle%20version%209.pdf?dl=0
While it's likely a temporary change for operational reasons, it suggests a possible more permanent (partial) mitigation for #LightPollution from large #SatelliteConstellations.
#BlueWalker3 #VerminOfTheSkies
IAU CPS Statement on BlueWalker 3
Unfortunately, the last four paragraphs seem to maintain the timid logic of a “consensus” doomed to failure. Pats on the back of the promoters of the #LEO #SatelliteConstellations isn’t the way to go. Promoters have shown to be everything but interested on the impacts and on their reduction.
There’s the need of a much stronger condemnation from the scientific community. We are losing the night skies.
https://www.iau.org/news/pressreleases/detail/iau2211/?lang
Of, course, I'd feel a bit better about our odds of seeing a dangerous asteroid before it hits us if we were working to rebuild the radar capability that we lost with the #AreciboTelescope ...
... or if the night sky wasn't being cluttered with a LOT more reflective satellites, causing more confusion for the telescopes that are tasked with finding such objects. 🙃
@pawley @skyglowberlin @royvangrunsven @DGaladi @Airam_Rguez @YvanDutil @andreas_jechow @JohnBarentine @remiboucher @DianaUmpierre
Sharing to the world ;) the presence here at Mastodon of +two researchers who care about the protection of the #nightskies (#satelliteconstellations , #lightpollution ):
