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Mastodon: AboutGet the appKeyboard shortcutsView source codev4.4.0-nightly.2025-03-25

#satellites

18 posts17 participants1 post today
Public
Space Environmentalism

"With over 34,000 large debris pieces in orbit and millions of smaller fragments, the threat of collisions and the looms large. International cooperation, stringent regulations, and technological solutions are proposed to address the crisis, emphasizing the need for a comprehensive global framework to ensure for future generations."

intpolicydigest.org/the-platfo

International Policy DigestSpace has Become a Trash Dump and That's a ProblemAll those decommissioned satellites and other space junk is becoming a problem.
#Space#Satellites#SpaceDebris
Public
Warren Currie 🦠🦐

Weekend #Plankton #Factoid 🦠🦐
Autotrophs are organisms which use pigments for photosynthesis by absorbing light at specific wavelengths. The dominant chlorophyll-a absorbs #light in the violet-blue (430nm) and red (660nm) wavelengths, but not green, which is why #algae is green. Phycocyanin, an accessory #pigment in #cyanobacteria, absorbs in those green wavelengths, so is blue in colour. This is why we can determine algae types from space.
scitechdaily.com/new-research-
#Science #satellites #oceans

image/jpeg a graph of pigments in algae showing absorbance of light by wavelength grom 440 (violet) to 700 nm (red). Pigments shown are chlorophyll a, chlorophyll b, chlorophyll Concentration, carotenoids, phycocyanin, phycoerythrin. Each absorb light at different wavelengths at their peaks.
image/jpeg a microscope image of a ball with tiny green dots filled with other bright green balls against a black background. Volvox Frank Fox CC-BY-SA 3.0.
image/jpeg a microscope image of a filament of cells that are slightly bluish-green coloured. Anabaena sphaerica CC-BY-SA 3.0.
Public
Space Environmentalism

Astrospace interview with Tim Flohrer, head of the European Space Agency's Space Debris Office: "What is actually making our job more difficult today compared to a few years ago, is the rapid increase of active satellites. ... The effort we have to put today in this coordination activities is enormous, and rapidly increasing. And the complexity of the process results also in increased collision risks."

astrospace.it/2025/03/26/prese

Astrospace · Present and future of space debris management. Interview with Tim Flohrer, head of the ESA Space Debris OfficeBy Paolo Ferri
#Space#Satellites#SpaceDebris
Public
Space Environmentalism

" startup Gravitics has been awarded a $60M contract by the US Space Force to develop an 'orbital carrier' that can deploy satellites from orbit. ... While many questions remain about what exactly this carrier could be capable of — unsurprising, considering the sensitive nature of the plans — it's yet another sign that the US military is looking to beef up its presence in orbit, highlighting a brewing 'space arms race.'"

futurism.com/the-byte/space-fo

Futurism · The Space Force Is Working on an Aircraft Carrier for SpaceBy Victor Tangermann
#Military#Satellites#SpaceEnvironment
Public
Muriel de Relikto

Şatellites : un groove stellaire !

Un retour sur le psychédélisme turc des années 1970 avec ce groupe aussi étonnant que détonnant.

Le groupe décrit sa musique comme « perdue quelque part entre les ruelles mystérieuses d’Istanbul dans les années 1970 et le soleil brûlant sur la mer bleue cristalline de Tel Aviv-Jaffa », une formule poétique pour évoquer le brassage culturel proposé par les sonorités traditionnelles turques couplées à celles de l’acid rock.

📅Jeudi 27 mars : Le Tetris, Le Havre
📅 Samedi 29 mars : Le Kubb, Évreux

relikto.com/2025/03/25/satelli

www.relikto.comŞatellites : un groove stellaire – Relikto
#satellites#PsychéTurc#Concert
Public
Benjamin Carr, Ph.D. 👨🏻‍💻🧬

#US #SpaceForce warns #China's #satellites are 'dogfighting' in space
China has practiced co-ordinated satellite maneuvers in space that resemble aerial #combat, according to US Space Force
Speaking at McAleese Defense Programs Conference, the vice chief of space operations General Michael Guetlein said the US is preparing to develop capabilities for off-planet warfare. Space Force needs to guarantee "space superiority," over China, Russia, and other nations, he opined.
theregister.com/2025/03/20/us_

The Register · US Space Force warns Chinese satellites are 'dogfighting' in spaceBy Iain Thomson
Public
Dr. John Barentine FRAS

"In this Note, we discuss the rationale behind the @iau_cps recommendation on satellite brightness for objects in low Earth orbit (LEO). Specifically, we clarify the reasoning behind the chosen altitude dependence and the limitations of this choice. We further discuss some approaches toward brightness limits for objects beyond LEO."

iopscience.iop.org/article/10.

iopscience.iop.orgRadware Bot Manager Captcha
#Space#Astronomy#Satellites
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