Space Junk

[edwest4]

Amazon, the company, is in the satellite launch business. It is behaving like a sovereign nation. Of course, launches, orbits and time in service have to be coordinated with the military. Not knowing what's up there would be a hazard to navigation.

 

[bearnard97]

Sending them to the Sun will require a lot of energy that might prove too expensive to sustain. But the idea might make sense if dead sats are first collected (empty starship?), eventually processed to retrieve materials and electronics and then de-orbited in bulk for the sun to burn.

As I have already mentioned here, the easiest and the cheapest way to deal with space junk ( dead sats ) is to send them to the atmosphere of Earth and make them burn down there.

 

[Flyaway]

The large number of re-entries of satellits from megaconstellations may cause a second ozone hole.

Air pollution from reentering megaconstellation satellites could cause ozone hole 2.0

When defunct satellites burn in the atmosphere, they leave behind chemicals that could damage the ozone layer and affect how much light Earth absorbs.

www.space.com

 

[Flyaway]

View: https://youtu.be/HVOCn6WXJpU

 

[riggerrob]

View: https://youtu.be/HVOCn6WXJpU

Was that 23 tons before or after they burned all their liquid fuel?

 

[Dilandu]

Was that 23 tons before or after they burned all their liquid fuel?

After.

 

[riggerrob]

The large number of re-entries of satellits from megaconstellations may cause a second ozone hole.

Air pollution from reentering megaconstellation satellites could cause ozone hole 2.0

When defunct satellites burn in the atmosphere, they leave behind chemicals that could damage the ozone layer and affect how much light Earth absorbs.

www.space.com

How does the albido of aluminum oxide compare with the albido of titanium oxide, or residue from burnt carbon fiber composites?

 

[TomcatViP]

23t of garbage in an uncontrolled re-entry is barbaric well past the onset of the 21st century. This has to stop.

 

[Flyaway]

#CZ5B debris found near the border of Malaysia and Indonesia, that is more than 1200km from the splash location disclosed by CMSA

https://twitter.com/x/status/1554163205261258752

View: https://twitter.com/CNSpaceflight/status/1554163205261258752

https://twitter.com/x/status/1554514723843948544

View: https://twitter.com/cnsawatcher/status/1554514723843948544

Fairing of Long March 5B Y3 rocket (CZ5B) found in Philippine . Expecting briefings from CNSA/CMS. Source: share.api.weibo.cn/share/32535354…

So, CZ-5B recap: signficant debris falls in Kalimantan, Indonesia and Sawarak, Malaysia (both on Borneo). No casualties or property damage reported, but debris is near villages and a few hundred metres either way could have been a different story.

https://twitter.com/x/status/1554113609248161792

View: https://twitter.com/planet4589/status/1554113609248161792

 

[Flyaway]

A SpaceX representative says a team will travel to Australia after the recent discovery of a large piece of space junk on an outback property, saying the incident is "within the expected analysed space of what can happen".

SpaceX to 'check out' outback space junk site, saying fall to Earth 'within expectations'

A SpaceX representative says a team will travel to Australia after the recent discovery of a large piece of space junk on an outback property, saying the incident is "within the expected analysed space of what can happen".

www.abc.net.au

 

[Stovepipe]

Send up a Caterpillar D-9 bulldozer with thrusters instead of tracks and an electric powerplant and solar panels.

 

[Grey Havoc]

Startups Envision Lucrative Space Reentry Industry | Aviation Week Network

Companies say satellites could be refurbished and reused, addressing both costs and environmental concerns.

aviationweek.com

 

[Grey Havoc]

'Drag sail' to deorbit satellites receives $750K in seed funding

Commercial sales of the Spinnaker drag sail may start as soon as 2023.

www.space.com

 

[Grey Havoc]

Joint Commerce, STRATCOM commercial SSA pilot planned for December - Breaking Defense

That pilot project will use SPACECOM's Unified Data Library (UDL) as a data base, DalBello said, because Commerce is still in the early stages of creating its own cloud-based data storage capability, called the Open Architecture Data Repository (OADR).

breakingdefense.com

 

[bobbymike]

Japan's Astroscale has a new robot tug to clean up space junk. Here's how it works (video)

Rendezvous, retrograde burn and repeat — Astroscale's ELSA-M will be capable of deorbiting multiple satellites per mission.

www.space.com

 

[Flyaway]

https://twitter.com/x/status/1683561138317828096

View: https://twitter.com/esaoperations/status/1683561138317828096

#Aeolus reentry #operations, day 1: first manoeuvre successfully completed!

Today saw the largest thruster firing in #Aeolus’s five years in orbit:

Altitude lowered by ~ 30 km
Burn duration: 37 min 24 secs
️Fuel consumption: ~ 6 kg

Find out more️ https://blogs.esa.int/rocketscience/2023/07/24/aeolus-reentry-live/

Remember, Aeolus was not designed for this ending. It was ‘meant’ to naturally fall in an uncontrolled reentry – its propulsion system and fuel reserves were not designed to allow the satellite to be controlled down to the required altitudes for a fully controlled reentry.

https://twitter.com/x/status/1683561805430374402

View: https://twitter.com/esaoperations/status/1683561805430374402

With this campaign, ESA engineers and operators are pushing the satellite to the limits of what it can do.

The success of this first manoeuvre bodes well for the rest of the campaign.

#ByeByeAeolus️
#SustainableSpace

Related video that explains more:

View: https://youtu.be/f1FKeqJVvXI

 

[Flyaway]

https://twitter.com/x/status/1685183480781561856

View: https://twitter.com/esa_aeolus/status/1685183480781561856

CONFIRMED in the early hours, #Aeolus reentered Earth’s atmosphere on 28 July at around 21:00 CEST above Antarctica.

by US Space Command.

Read more about the historic, pioneering end to a trailblazing missionesa.int/Applications/O…

#ByeByeAeolus
#SustainableSpace