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Showing posts with label space junk. Show all posts
Showing posts with label space junk. Show all posts

Sunday, May 28, 2017

Space Islands from Space Waste

Eventually there will come a time when humans are able to fully access and exploit the infinite raw materials in space. But there will be material which is disposed of as asteroids are mined for precious and useful metals. The rock and dirt will simply be thrown away. But this may be one of the most valuable material.

Space is a different environment from any that we have ever experienced on earth. On earth certain things can be ignored or discarded and they will simply be reabsorbed by the world until a use is found for them. Living in space doesn't afford the luxury of waste. As new industries and products are created that use the resources of space they must take a comprehensive view of how to use those resources.

Space mining will be one of the first to experience the need for total resource utilization as it will be the one of the first product-based industries in space. (satellites are a service-based industry)

Not all of what is mined from asteroids will need to be dropped to earth to be used. As it stands now the only thing worth dropping are the precious metals. But some of the other useless minerals will likely be turned into spacecraft, and large asteroids may be hollowed out to be turned into ships or space stations. But these processes are energy and engineering intensive. Another way could be created that would be used to create space real estate. All the left over materials could just be thrown into a pile with a little glue.

Masses of land could be built, with very little effort, from the debris left from space mining. From that, settlers and organizations could set up habitats on the bodies. These large bodies could have the benefit of special configurations and orientations. they could be built as large disks which can always face the sun, allowing access to a large energy source. They could become space docks. They could even be used as resorts.

Over hundreds of years these large masses of rejected dust and dirt could start to form the basis of a small Dyson Ring or Sphere. Far fetched and distant but very possible.

This post post is meant to draw attention to a use for the useless. Space mining will have waste. When an asteroid is stripped and ground up, many of the minerals will not be worth saving or transporting, unless a use already exists.

This is simply a heads up that one man's waste is another man's resort island.

Saturday, February 27, 2016

Saturday, August 30, 2014

Orbital Zoning


For nearly sixty years humans have been sending objects into orbit. Some are weather satellites, others digital TV, and some are just junk. Though there is a huge volume of orbital space above Earth to put satellites in, orbits are in fact filling up and and are largely uncontrolled. As the private space industry grows the need to zone and regulate orbits for particular uses and organizations will be increasingly necessary to create a safe and effective orbital airspace.

To clarify this concept let's look at a scenario. Imagine a company, such as Bigelow Aerospace, has constructed an orbital hotel. The station sits in an orbit several hundred miles above Earth. Now another company developing a space BattleBots show decided to set up shop in the same orbit. This is allowed because no one owns the orbit or can prohibit anyone else form using it. Unfortunately, the Spacebots end up smashing each other to pieces in the orbit, much to the enjoyment of Earth spectators. But now there is an increase of debris which could easily puncture the soft hull of the space station. While the Spacebots would be held accountable for the damage the entire problem could have been avoided if the space station was able to zone its orbit for only human occupation. This is a slightly silly circumstance but the point is clear.

The same type of situation is the reason that factories can't be built in residential areas here on Earth. Similar rules must be set up for space. It will not be possible for space to continually be treated as an international free area like Antarctica. People and organizations actually want to go to space and get something from it, in this case a location.

Orbits are real estate, just as on Earth. There are certain locations better suited for certain tasks and some that are filled with dangerous litter. But there are a lot of orbits above the earth. The 3-D nature of the Void allows for this, as well as the fact that everything in orbit is moving and can be coordinated.

So how does one go about defining property in a place where there are no boundaries but simply the "idea" of locations?

Well the simple place to begin would be with altitude. Space could be divided into more altitude layers. Within those altitudes one could then define particular orbits just as radio bands are defined on earth. Particular altitudes could be reserved for earth observation, others for communications satellites, and then the areas above the debris-filled orbits could be reserved for space stations.

Then within the altitudes particular orbital trajectories could be defined. A company would be able to purchase these trajectories and maintain its hardware within them . But this opens the question, from whom does one purchase an orbit, something which transcends any type of Earth boundary.

The likely solution would be to allow for homesteading of defined orbits. Organizations and Countries could agree to allow ownership of particular orbits through a system of placing improvements in them. Then once ownership of an orbit has been established, through the International Homesteading System, the orbits can be sold. This does require international cooperation but that is the case in many aspects of Space Law and a topic for another time.

Enforcement of homesteading boundaries will be an issue. How to keep vehicles in their space and ensure no one trespasses will initially fall to ground-based tracking and monitoring of payloads as they are launched. But eventually a Space Authority will have to be established to act as a "traffic cop" for Earth orbits. It would go around checking the authorizations of certain satellites to be in certain areas and perhaps "towing" them when they are not.

The issue of spy satellites will also be a problem. These craft are some of the best kept secrets in the world. Governments will not want to register spy satellites or even relegate them to particular altitudes. But as slowly as orbital space is filling this issue may resolve itself before it has to be addressed for private needs.

Space will eventually have to have a system of organization or regulation. Responsibility for space debris and sharing of orbits will become too large of issues to simply ignore. Orbits will become crowded and at that point everyone will want to know what is theirs, else the industry could become quite confrontational. This can't happen because it would be self-defeating to the development of a Space Economy.


Note: A particular example of where zoning of orbits would have been useful would have been in the Chinese Satellite Missile Test incident. Again, it is an issue of international relations but if the Space-Faring nations had collaborated to allocate weapons testing orbits, other nations and organizations could have avoided those areas and now not have to dodge debris.

Sunday, May 4, 2014

A Company for Reactivating Vintage Spacecraft

There are more spacecraft added to the menagerie in orbit every year. Some are operational. Many are
not. But that is not because they are broken.

Many spacecraft simply have served their purpose. They are no longer needed or have become out of date. So they are shut down.
A Space Junkyard from Star Wars
This collection of used satellites and probes (basically space junk) leaves an opportunity for entrepreneurs to repurpose them by simply regaining contact with them, creating new missions, and perhaps maintaining the vintage equipment needed to operate them.

The chance here is that the all of the expensive work of designing and launching the craft has already been done by someone else and now the scavenger gets all of that for free, outdated though it may be. All a new company would have to do is design new missions for the craft and recreate the tools needed to operate it. This just take a few software or electrical engineers

Now a satellite that used to monitor earth weather until its resolution became too poor, can instead become an open source orbital photography platform. Or it could be moved into a new orbit to be used as a practice dummy for docking. Or in the case of the ISEE-3 Reboot Project, it can be sent to study an asteroid.

The ISEE-3 Reboot Project is crowdfunding effort underway to perform the kind of spacecraft refurbishment just discussed. The group wishes to regain contact with a a defunct solar probe and command it to fire its engines so that is can be sent to explore a nearby asteroid. While they are doing this simply as an exercise and valiant research effort, the results from the project could be the foundation of a future space company.

The company that pursues this kind of a mission would basically just be the antique dealer of  spacecraft. You go to their shop and you find the CRT TV of spacecraft  and buy control of it to drop an anvil onto it.

And this company doesn't have to make the old satellites do anything complex. The regaining of a means of controlling them is of huge value. With that returned control, the space junk can be collected, repurposed, reused, scrapped, or eliminated. All necessary operations in the space industry gaining a litter problem.

Any company that regains control of defunct spacecraft would have a large foothold in the private space industry as it becomes the dealer of the vintage space paraphernalia. And really, all they would need is a few software developers, a ham radio set, and maybe a retired rocket scientist.