Steigende #Treibhausgase könnten das #Weltraummüll-Problem verschärfen.

Laut einer neuen Studie verlangsamt sich der Abbau von #Satelliten in niedriger #Erdumlaufbahn, was das Risiko unkontrollierbarer #Kollisionen erhöht.

Bis 2100 könnte die Kapazität für neue #Satelliten um bis zu 82 % sinken. Forscher warnen vor dem Kessler Syndrom (Schneeballeffekt durch Kollisionen).

Wird Elon vermutlich nicht interessieren, oder?

https://www.sciencealert.com/greenhouse-emissions-threaten-the-future-of-low-earth-orbit-scientists-warn

The generation of whistler, lower hybrid, and magnetosonic waves by satellites passing through ionospheric magnetic field aligned irregularities: https://pubs.aip.org/aip/pop/article/32/1/012103/3329644/The-generation-of-whistler-lower-hybrid-and -> UAF scientist designing satellite to hunt small #SpaceDebris: https://www.gi.alaska.edu/news/uaf-scientist-designing-satellite-hunt-small-space-debris

I am curious to see if the local all-sky cameras will have produced movies too...

https://allsky7.net/index.html?&station=AMS60#liveview

https://www.uni-goettingen.de/en/all-sky+camera/547667.html

I hope @thusser @unigoettingen will let us know in case they caught something :-)

"'It's a very difficult problem to communicate to the general public. It's not like an oil spill, where the pelicans are dying. It's not visceral. There's debris you can show them through a telescope. But it's just a dot.'"

https://www.cnet.com/home/internet/features/the-triumphs-and-troubles-of-the-7000-starlink-satellites-crowding-our-night-skies/

“We found that there's about one per cent risk of a re-entry over the really high-density airspace, like around airports. That rises to about a 26 per cent chance of a re-entry in busier air spaces, such as the Northeastern U.S., over Vancouver-Seattle and Northern Europe.”

https://www.vancouverisawesome.com/highlights/falling-space-junk-poses-growing-threat-to-aviation-warns-bc-researcher-10198012

"[W]hile [astronomers] continue to work on satellite interference issues, they are expanding their work to other topics broadly associated with space sustainability. These issues range from the threat of obtrusive space advertising and reentries that interfere with their observations to the danger of confusing asteroids with flying Teslas."

Comprehensive reporting by @jeff_foust for @spacenews_inc on Dark & Quiet Skies at #AAS245.

https://spacenews.com/as-the-night-sky-grows-crowded-astronomers-face-a-growing-problem/

"[T]here is no concept of 'international crime' for pollution in outer space. However, the International Court of Justice (ICJ) has discussed harm to future generations, and this could include the degradation of the space environment."

"Wheeler highlighted an example in Belgium where the law could be about to change. Article 96 of the new Belgian Criminal Code includes the crime of 'ecocide.' This relates to 'the intentional destruction of the natural environment, and this includes outer space. This is a really interesting concept,' Wheeler said."

https://www.satellitetoday.com/sustainability/2025/02/03/satellite-industry-talks-sustainability-but-what-will-it-take-to-bring-real-change/

Here's a great explainer video on "the runaway debris threat to space technology" from the Financial Times.

https://channels.ft.com/en/tech/the-runaway-debris-threat-to-space-technology/

You know, I have that filefolder #RealityGoesCrazy. I love satire, absurd scifi plots, and wouldn't be surprised if Douglas Adams suddenly rang the doorbell. And as a journalist, some news doesn't really surprise me.
But I wasn't sure whether this text was satire until the last sentence. It is *reality* gone completely mad. https://www.astronomy.com/science/astronomers-just-deleted-an-asteroid-because-it-turned-out-to-be-elon-musks-tesla-roadster/

"Currently, the UN recognizes 17 SDGs, introduced in 2015 to inspire global efforts to eliminate poverty, safeguard the #environment, and promote prosperity. However, the increasing presence of #satellites and other objects in Earth's orbit is prompting concerns about its future. Without coordinated international action, this once-pristine #SpaceEnvironment could face irreversible damage.

"In a study published in the journal One Earth, an international team of experts in fields ranging from satellite technology to ocean plastic pollution proposed the creation of an 18th #SDG dedicated to Earth's orbital environment."

https://www.spacedaily.com/reports/A_Sustainable_Development_Goal_for_Earths_Orbit_999.html

Gehen Sie weiter. Davon geht überhaupt keine #Gefahr aus.

https://www.golem.de/news/weltraumschrott-ring-aus-metall-faellt-in-kenia-vom-himmel-2501-192074.html

Ein 500 kg schwerer #Trennring einer #Rakete ist nahe #Mukuku in #Kenia vom Himmel gefallen.
Laut der Kenya Space Agency bestand keine Gefahr, doch der Vorfall verdeutlicht das wachsende Problem mit #Weltraumschrott. Seit 2019 nimmt der Start von unkontrollierten Objekten drastisch zu. Organisationen wie die #ESA fordern internationale Abkommen und mehr #Nachhaltigkeit in der #Raumfahrt.

".. U.S. Space Force reported Dec. 19 .. identified a “low-velocity fragmentation event” involving the DMSP-5D2 F14 spacecraft. .. event took place at 9:10 p.m. Eastern Dec. 18 at an altitude of 840 kilometers, .."
".. part of a family of spacecraft that have suffered breakups in orbit .."

https://starfightersspace.com/spacenews-retired-military-weather-satellite-breaks-up/

20.12.2024