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Salva Bará

@salvabara.bsky.social

Physicist. Light pollution researcher - Former Prof. Titular at Univ. de Santiago de Compostela, Galiza (European Union) Born at 317 ppm CO2 https://salvabara.blogspot.com/

297 Posts503 Follower475 Folgt
UNRWA@unrwa.org · 12h ago

Graduating in #Gaza today is more than a validation of skills. It is a testament to perseverance, innovation, determination & hope for the future. UNRWA Technical & Vocational Education & Training programmes continue to equip young people with the skills and opportunities they need. #UNRWAworks

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Raul Cerveira Lima 🇪🇺@raulclima.eurosky.social · yesterday

O mesmo começou a passar-se em Portugal… Vai pelo caminho da Bandeira Azul: céus poluídos certificados onde a Via Láctea luta pela sobrevivência, mas onde há bons alojamentos turísticos onde se pode jantar (na terminologia portuguesa ;) ) com vista para 500 estrelas e 1000 LED brancos no horizonte.

Salva Bará@salvabara.bsky.social · 5d ago

"De mora luminis: Roemer’s discovery 350 years later" An excellent work of our colleagues Fabio Falchi, Riccardo Furgoni, et al about the first successful measurement of the speed of light, made by Ole Roemer... and a modern version suitable for high schools & undergrads. arxiv.org/abs/2607.28512

De mora luminis: Roemer's discovery 350 years later

350 years from the 1676 announcement of the Roemer's discovery that light propagates with finite speed, we present our observations using eyes with telescopes having similar resolution compared to tho...

arxiv.org

Center for Space Environmentalism@space-environment.bsky.social · 6d ago

We just filed a Reply Comment with FCC opposing Cowboy Space’s 20,000-satellite constellation. Instead of engaging with the science on atmospheric pollution and astronomy hazards, they relied on procedural deflections. Read our full filing here: www.spaceenvironmentalism.org/actions/publ...

Reply Comment to the Cowboy Space Corporation consolidated opposition and r

July 30, 2026 Before the FEDERAL COMMUNICATIONS COMMISSION Washington, D.C. 20554 via ICFS Electronic Filing In the Matter of: Cowboy Space Application for “Stampede” Constellation ICFS File No. ...

spaceenvironmentalism.org

Salva Bará@salvabara.bsky.social · last wk.

"the rule (...) would allow the agency ​to waive requirements ​under the Endangered Species Act, ‌(...), the Clean Air Act, ​the ​National ⁠Historic Preservation Act, and other (...) laws (...) ’to simplify and ⁠expedite ​commercial space ​licensing'" www.reuters.com/world/us-faa...

US agency proposes accelerated approval for commercial space missions

The U.S. aviation regulator on Tuesday proposed new rules to speed up approval of commercial space missions like ​SpaceX's rocket and satellite launches by no longer requiring them to follow ‌provisio...

reuters.com

Center for Space Environmentalism@space-environment.bsky.social · last wk.

Amazon is asking the FCC to approve 5,105 massive new satellites while hiding their orbital debris risk models behind a wall of corporate secrecy. The public deserves full transparency, because a safe and sustainable space environment belongs to all of us. spacenews.com/amazon-files...

Amazon files application for direct-to-device satellite constellation

Amazon filed plans with the FCC for a constellation of more than 5,100 satellites that would provide direct-to-device services using Globalstar spectrum.

spacenews.com

Raul Cerveira Lima 🇪🇺@raulclima.eurosky.social · 2w ago

Resumo do Encontro “Metade da Magia é Quando Acaba o Dia”, uma excelente iniciativa organizada em Manteigas pela Associação de Amigos das Penhas Douradas. O tema: a preservação da noite, da sua biodiversidade e estratégias contra a #poluiçãoluminosa. sapo.pt/artigo/mante...

MANTEIGAS: Poluição luminosa ameaça biodiversidade e saúde na Serra da Estrela

Portugal é atualmente um dos países europeus mais afetados pela poluição luminosa e a Serra da Estrela não escapa a essa realidade. O alerta foi deixado por investigadores, médicos e especialistas reu...

sapo.pt

T. Ryan Gregory 🇨🇦@tryangregory.bsky.social · 2w ago

Billionaire logic is that it makes more sense to terraform Mars rather than to stop venusifying Earth, and that it is a better strategy to build underground bunkers than to make the whole planet a better place to live for everyone.

Center for Space Environmentalism@space-environment.bsky.social · 2w ago

"'This refuge is one of the last places left for the public to enjoy nature in the Rio Grande Valley,' Jordahl added. 'The court has to intervene now, because once these refuge lands are transferred to SpaceX, they’re gone forever.'" www.space.com/space-explor... #Space #Environment

'The court has to intervene now': Indigenous groups and conservationists condemn SpaceX's South Texas land swap

"Federal officials are racing to fork over America's public lands to one of wealthiest corporations on Earth before the courts can even weigh in."

space.com

Center for Space Environmentalism@space-environment.bsky.social · 2w ago

"Space datacenters would release staggering levels of pollution that would probably alter the Earth’s atmosphere and be 'catastrophic' for the planet, space industry experts and environmental groups warn in a new petition demanding a review of their impacts." www.theguardian.com/science/2026...

Space datacenters proposed by Musk and Bezos ‘catastrophic’ for planet, experts warn

New US petition demands review of plans from tech companies amid fears of environmental destruction

theguardian.com

UNRWA@unrwa.org · 2w ago

At #CEAPAD in Manila, UNRWA Christian Saunders said that the Agency is essential to supporting recovery, stability and the development of capable Palestinian institutions. He called for sustained political and financial support to protect UNRWA’s operations and help advance a just and lasting peace.

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Royal Astronomical Society@royalastrosoc.bsky.social · 2w ago

Dr Jonathan McDowell is the 'pro side' seconder, arguing for the far side of the Moon to be preserved solely for science. "What we do on the Moon now and in the coming years will set a precedent as we embark on exploring the entire Solar System," he says. 1/2 ⤵️

Dr Jonathan McDowell.Dr Jonathan McDowell.
Center for Space Environmentalism@space-environment.bsky.social · 2w ago

"Reflect Orbital faces staunch opposition from many in the scientific community—including astronomers and scientists who told @moneywise.com that the satellites could cause harm to life on Earth [and] pose ... 'an existential threat to optical astronomy.'" moneywise.com/news/top-sto...

FCC approves Reflect Orbital's giant space mirrors to sell 'sunlight on demand' — scientists warn of 'existential threat' to astronomy and the Earth

Will Reflect Orbital’s satellites help build a cleaner, more sustainable future — or cause widespread harm in a world where the sky “does not go dark when it is night”?

moneywise.com