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#SpaceDebris

1 Beitrag1 Beteiligte*r0 Beiträge heute

Brussels moves to tackle satellite junk in space.

The European Commission on Wednesday proposed a new Space Act that seeks to dial up regulatory oversight of satellite operators — including requiring them to tackle their impact on space debris and pollution, or face significant fines.

It’s ‘starting to look like a jungle up there.’

mediafaro.org/article/20250625

A satellite-filled sky. | Alan Dyer/VWPics/Universal Images Group via Getty Images
Politico.eu · Brussels moves to tackle satellite junk in space.Von Mathieu Pollet
#Space#Pollution#Satellites
Antwortete im Thread

@sundogplanets
It's also the sort of business that I feel like any state foreign intelligence service ought to be willing to fund. Just in case something they regarded as not being useful to them in space needed to be de-orbited in a responsible and timely manner. I feel like we should try to persuade the band to capitalise on that... 🤪

Regardless, astronomers of the world will be willing to give Space Junk Removal Service a listen ❤️

spacejunkremovalservice.bandca

#space#spaceJunk#spaceDebris

#SpaceX #starship - the film trailer: youtube.com/watch?v=tiD8nGD0Q6w ... It's a little bit old but still explodes successfully! 😂

The #climate, the #environment, #nature and the taxpayers say thanks to the #billionaire. #sarcasmalarm
And you need much sarcasm reading the fanboys' comments who have no historic knowledge about how much better rockets once were (I watched the first moon landing live).

"'Generally speaking, this is not good for anyone who wants to continue to receive benefits from the use of space. Pieces of debris at that altitude will stick around for years, if not decades. Leaving those rocket bodies at 700-800 km altitude is incredibly irresponsible. China is just beginning to launch its very large constellations so there is time to fix this before it becomes a grave danger.'”

spacenews.com/chinas-megaconst

SpaceNews · China’s megaconstellation launches could litter orbit for more than a century, analysts warnVon Andrew Jones

#SpaceX's "four-page letter lists the alleged flaws with AST's paperwork, concluding that its 'orbital debris mitigation plan fails to demonstrate that the FM1 satellite can operate safely and sustainably.' The same document also faults the application for failing to provide more details on how the company will prevent its satellite from disrupting #astronomy, even though AST recently reached a deal with the US National Science Foundation."

pcmag.com/news/spacex-seizes-o

#Sonnenstürme verkürzen die Lebensdauer von #Starlink-Satelliten und lassen sie schneller zur Erde zurückkehren.

Durch erhöhte #Atmosphärendichte steigt der Luftwiderstand, was zu unvorhersehbaren #Bahnabweichungen führt. Das erschwert die #Kollisionsvermeidung und könnte das Risiko für herabfallende #Trümmerteile erhöhen. Mit Tausenden Satelliten im Orbit wird das #Weltraummanagement zunehmend komplexer.

arxiv.org/abs/2505.13752

arXiv.orgTracking Reentries of Starlink Satellites During the Rising Phase of Solar Cycle 25The exponential increase of low-Earth orbit (LEO) satellites in the past 5 years has brought into intense focus the need for reliable monitoring and reentry prediction to safeguard from space collisions and ground debris impacts. However, LEO satellites fly within the upper atmosphere region that exerts significant drag forces to their orbits, reducing their lifetimes, and increasing collision risks during dynamic events, like geomagnetic storms. Such conditions can become more severe during geomagnetic storms, particularly during extreme events. In this work, we use two-line element (TLE) satellite tracking data to investigate geomagnetic activity effects on the reentries of 523 Starlink satellites from 2020 to 2024. This period coincides with the rising phase of solar cycle 25, which has shown itself to be more intense than the previous solar cycle. We derive satellite altitudes and velocities from TLE files and perform a superposed epoch analysis, the first with hundreds of similar satellites. Even with limitedly accurate TLE data, our results indisputably show that satellites reenter faster with higher geomagnetic activity. This is explained by the fastest orbital decay rates (in km/day) of the satellites caused by increased drag forces. We also find that prediction errors, defined as the difference between the epochs of actual reentries and predicted reentries at reference altitudes, increase with geomagnetic activity. As a result, we clearly show that the intense solar activity of the current solar cycle has already had significant impacts on Starlink reentries. This is a very exciting time in satellite orbital drag research, since the number of satellites in LEO and solar activity are the highest ever observed in human history.
Space Journey / Rosetta

Risograph based on the trajectory of the ESA probe “Rosetta”, which was sent in 2004 to explore the comet 67P/Churyumov-Gerasimenko and crashed on the comet’s surface in 2016 after the mission was completed.

The work was realized during an Artist-in-Science Residency of the artist at the European Space Agency (ESA) hosted by Kultur einer Digitalstadt in Darmstadt in 2022.

The print was produced by Herr und Frau Rio in Munich and is a limited, signed and numbered edition.

Foto: Tobias Hübel

[Swaantje Güntzel, Space Journey / Rosetta, Risograph, 29.7 x 42 cm]


#art #conceptualart #contemporaryart #kunst #konzeptkunst #zeitgenössischekunst #space #weltraum #esa #esoc #darmstadt #spacedebris #rosetta #rosograph #risography #risography #artitsinscience #artistresidency #kultureinerdigitalstadt #herrundfraurio #spaceprobe #comet #komet #67Pchuryumovgerasimenko #esasonde #swaantjeguentzel #swaantjegüntzel #artprint #artedition

"The increasing accumulation of artificial space debris is introducing a new form of light pollution, which is progressively impacting night sky brightness and observational conditions for professional astronomy."

The modeled effect predicts "an increase in night sky background brightness of 5 to 11% above natural levels attributable to these objects."

doi.org/10.1093/mnrasl/slaf052