A geological map of the Moon showing different formations and mineral deposits. Credit: NASA/GSFC/USGS
The prospect of mining asteroids and the Moon is on a lot of peoples’ minds lately. Maybe it’s all the growth that’s happened in the commercial aerospace industry in the past few decades. Or perhaps it’s because of Trump’s recent executive order to allow for asteroid and lunar mining. Either way, there is no shortage of entrepreneurs and futurists who can’t wait to start prospecting and harvest the natural bounty of space!
Coincidentally enough, future lunar miners now have a complete map of the lunar surface, which was created by the US Geological Society’s (USGS) Astrogeology Science Center, in collaboration with NASA and the Lunar Planetary Institute (LPI). This map shows the distribution and classification of the mineral deposits on the Moon’s surface, effectively letting us know what its familiar patchwork of light and dark patches the really are.
An illustration of a Moon base that could be built using 3D printing and ISRU, In-Situ Resource Utilization. Credit: RegoLight, visualisation: Liquifer Systems Group, 2018
In 2015, the Obama administration signed the U.S. Commercial Space Launch Competitiveness Act (CSLCA, or H.R. 2262) into law. This bill was intended to “facilitate a pro-growth environment for the developing commercial space industry” by making it legal for American companies and citizens to own and sell resources that they extract from asteroids and off-world locations (like the Moon, Mars, or beyond).
Artist's impression of the asteroid Psyche 16. Credit: ASU
It has been said that within the next quarter century, the world’s first trillionaires will emerge. It is also predicted that much of their wealth will stem from asteroid mining, a burgeoning space industry where minerals and volatile compounds will be harvested from Near-Earth Asteroids. This industry promises to flood the market with ample supplies of precious metals like gold, silver and platinum.
Beyond Earth, there’s the long-term prospect of the Main Asteroid Belt, which would provide even greater abundance. This is one of the reasons why NASA’s Psyche mission to explore the metal asteroid of the same name in the Main Belt has many people excited. While the exploration of this body could tell us much about the history of the Solar System, it could also be a source of riches someday.
Back in April, NASA once again put out the call for proposals for the next generation of robotic explorers and missions. As part of the NASA Innovative Advanced Concepts (NIAC) Program, this consisted of researchers, scientists, and entrepreneurs coming together to submit early studies of new concepts that could one-day help advance NASA’s space exploration goals.
One concept that was selected for Phase III of development was a breakthrough mission and flight system called Mini Bee. This small, robotic mining craft was designed by the Trans Astronautica (TransAstra) Corporation to assist with deep-space missions. It is hoped that by leveraging this flight system architecture, the Mini-bee will enable the full-scale industrialization of space as well as human settlement.
Artist's impression of the asteroid belt. Image credit: NASA/JPL-Caltech
There is no doubt that our world is in the midst of a climate crisis. Between increasing levels of carbon dioxide in our atmosphere, rising temperatures and sea levels, ocean acidification, species extinctions, waste production, diminishing supplies of fresh water, drought, severe weather, and all of the resulting fallout, the “Anthropocene” is not shaping up too well.
It is little wonder then why luminaries like Stephen Hawking, Buzz Aldrin, and Elon Musk believe that we must look off-world to ensure our survival. However, there are those who caution that in so doing, humans will simply shift our burdens onto new locations. Addressing this possibility, two distinguished researchers recently published a paper where they suggest that we should set aside “wilderness” spaces” in our Solar System today.
Artist's impression of a Near-Earth Asteroid passing by Earth. Credit: ESA
The era of renewed space exploration has led to some rather ambitious proposals. While many have been on the books for decades, it has only been in recent years that some of these plans have become technologically feasible. A good example is asteroid mining, where robotic spacecraft would travel to Near-Earth Asteroids and the Main Asteroid Belt to harvest minerals and other resources.
At the moment, one of the main challenges is how these craft would be able to get around and refuel once they are in space. To address this, the New York-based company Honeybee Robotics has teemed up with the University of Central Florida (UFC) to develop a steam-powered robotic spacecraft. The company recently released a demonstration video that shows their prototype World is Not Enough (WINE) “steam hopper” in action.
Artist's impression of a Near-Earth Asteroid passing by Earth. Credit: ESA
Roughly 4.5 billion years ago, scientists theorize that Earth experienced a massive impact with a Mars-sized object (named Theia). In accordance with the Giant Impact Hypothesis, this collision placed a considerable amount of debris in orbit, which eventually coalesced to form the Moon. And while the Moon has remained Earth’s only natural satellite since then, astronomers believe that Earth occasionally shares its orbit with “mini-moons”.
These are essentially small and fast-moving asteroids that largely avoid detection, with only one having been observed to date. But according to a new study by an international team of scientists, the development of instruments like the Large Synoptic Survey Telescope (LSST) could allow for their detection and study. This, in turn, will present astronomers and asteroid miners with considerable opportunities.
The study which details their findings recently appeared in the Frontiers in Astronomy and Space Sciences under the title “Earth’s Minimoons: Opportunities for Science and Technology“. The study was led by Robert Jedicke, a researcher from the University of Hawaii at Manoa, and included members from the Southwest Research Institute (SwRI), the University of Washington, the Luleå University of Technology, the University of Helsinki, and the Universidad Rey Juan Carlos.
As a specialist in Solar System bodies, Jedicke has spent his career studying the orbit and size distributions of asteroid populations – including Main Belt and Near Earth Objects (NEOs), Centaurs, Trans-Neptunian Objects (TNOs), comets, and interstellar objects. For the sake of their study, Jedicke and his colleagues focused on objects known as temporarily-captured orbiters (TCO) – aka. mini-moons.
These are essentially small rocky bodies – thought to measure up to 1-2 meters (3.3 to 6.6 feet) in diameter – that are temporarily gravitationally bound to the Earth-Moon system. This population of objects also includes temporarily-captured flybys (TCFs), asteroids that fly by Earth and make at least one revolution of the planet before escaping orbit or entering our atmosphere.
As Dr. Jedicke explained in a recent Science Dailynews release, these characteristics is what makes mini-moons particularly hard to observe:
“Mini-moons are small, moving across the sky much faster than most asteroid surveys can detect. Only one minimoon has ever been discovered orbiting Earth, the relatively large object designated 2006 RH120, of a few meters in diameter.”
This object, which measured a few meters in diameter, was discovered in 2006 by the Catalina Sky Survey (CSS), a NASA-funded project supported by the Near Earth Object Observation Program (NEOO) that is dedicated to discovering and tracking Near-Earth Asteroids (NEAs). Despite improvements over the past decade in ground-based telescopes and detectors, no other TCOs have been detected since.
Artist rendering of the LSST observatory (foreground) atop Cerro Pachón in Chile. Credit: Large Synoptic Survey Telescope Project Office.
After reviewing the last ten years of mini-moon research, Jedicke and colleagues concluded that existing technology is only capable of detecting these small, fast moving objects by chance. This is likely to change, according to Jedicke and his colleagues, thanks to the advent of the Large Synoptic Survey Telescope (LSST), a wide-field telescope that is currently under construction in Chile.
Once complete, the LSST will spend the ten years investigating the mysteries of dark matter and dark energy, detecting transient events (e.g. novae, supernovae, gamma ray bursts, gravitational lensings, etc.), mapping the structure of the Milky Way, and mapping small objects in the Solar System. Using its advanced optics and data processing techniques, the LSST is expected to increase the number of cataloged NEAs and Kuiper Belt Objects (KBOs) by a factor of 10-100.
But as they indicate in their study, the LSST will also be able to verify the existence of TCOs and track their paths around our planet, which could result in exciting scientific and commercial opportunities. As Dr. Jedicke indicated:
“Mini-moons can provide interesting science and technology testbeds in near-Earth space. These asteroids are delivered towards Earth from the main asteroid belt between Mars and Jupiter via gravitational interactions with the Sun and planets in our solar system. The challenge lies in finding these small objects, despite their close proximity.”
Time-lapse photo of the sky above the LSST construction site in Chile. Credit: LSST
When it is completed in a few years, it is hoped that the LSST will confirm the existence of mini-moons and help track their orbits around Earth. This will be possible thanks to the telescope’s primary mirror (which measures 8.4 meters (27 feet) across) and its 3200 megapixel camera – which has a tremendous field of view. As Jedicke explained, the telescope will be able to cover the entire night sky more than once a week and collect light from faint objects.
With the ability to detect and track these small, fast objects, low-cost missions may be possible to mini-Moons, which would be a boon for researchers seeking to learn more about asteroids in our Solar System. As Dr Mikael Granvik – a researcher from the Luleå University of Technology, the University of Helsinki, and a co-author on the paper – indicated:
“At present we don’t fully understand what asteroids are made of. Missions typically return only tiny amounts of material to Earth. Meteorites provide an indirect way of analyzing asteroids, but Earth’s atmosphere destroys weak materials when they pass through. Mini-moons are perfect targets for bringing back significant chunks of asteroid material, shielded by a spacecraft, which could then be studied in detail back on Earth.”
As Jedicke points out, the ability to conduct low-cost missions to objects that share Earth’s orbit will also be of interest to the burgeoning asteroid mining industry. Beyond that, they also offer the possibility of increasing humanity’s presence in space.
“Once we start finding mini-moons at a greater rate they will be perfect targets for satellite missions,” he said. “We can launch short and therefore cheaper missions, using them as testbeds for larger space missions and providing an opportunity for the fledgling asteroid mining industry to test their technology… I hope that humans will someday venture into the solar system to explore the planets, asteroids and comets — and I see mini-moons as the first stepping stones on that voyage.”
Our knowledge of space is starting to match up with our ability to get out there an explore it. There are several companies working on missions and techniques to harvest minerals from asteroids. What other resources are out there that we can use?
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Space Fab's Waypoint Space Telescope will be the first space telescope available to the general public. Credit: SpaceFab.US
One of the defining characteristics of the modern era of space exploration is the way the public and private aerospace companies (colloquially referred to as the NewSpace industry) and are taking part like never before. Thanks to cheaper launch services and the development of small satellites that can be built using off-the-shelf electronics (aka. CubeSats and microsats), universities and research institutions are also able to conduct research in space.
Looking to the future, there are those who want to take public involvement in space exploration to a whole new level. This includes the California-based aerospace company Space Fab that wants to make space accessible to everyone through the development the Waypoint Space Telescope – the first space telescope that people will be able to access through their smartphones to take pictures of Earth and space.
The company was founded in 2016 by Randy Chung and Sean League with the vision of creating a future where anything could be manufactured in space. Chung began his career developing communications satellites and has a background in integrated circuit design, digital signal processing, CMOS imager design, and software development. He holds sixteen patents in the fields of computer peripherals, imagers, and digital communications.
League, meanwhile, is an astrophysicist who has spent the past few decades developing optics, building and designing remote telescopes, solid state lasers, and has lots of experience with startups, fundraising, computer-aided design (CAD) and machining. Between the two of them, they are ideally suited to creating a new generation of publicly-accessible telescopes. As League told Universe Today via email:
“We have studied over 200 papers on the design of small satellite structures, electronics, navigation, and attitude control. We are rethinking satellite design, not tied down by legacy approaches. That fresh approach leads us to use a Corrected Dall Kirkham telescope design, rather than the standard Richey-Chretien design, an extending secondary mirror, rather than a fixed telescope structure, and a multi-purpose and multi-directional telescope, not a single purpose telescope just for Earth observation or just for astronomy.”
Together, League and Chung launched Space Fab in the hopes of spurring the development of the space industry, where asteroid mining and space manufacturing will provide cheap and abundant resources for all and allow for further exploration of our Solar System. The first step in this long-term plan is to build a profitable space telescope business by creating the first commercial, multipurpose space telescope industry.
“SpaceFab’s primary long term objective is to accelerate man’s access to space and to make the human race a multi-planet species,” said League. “This not only safeguards the human race, but all life that is brought along. We intend to make space resources readily available and dramatically less expensive than today, without environmental impact on Earth.”
What makes the Waypoint Space Telescope especially unique is the way it combines off-the-shelf components with revolutionary instruments. The design is based on a standard 12U CubeSat satellite, which contains the Waypoint telescope. This telescope has extendable optics that consist of a 21 cm silicon carbide primary mirror, a deployable secondary mirror, a 48 Megapixel imager for visible and near-infrared wavelengths, an 8 Megapixel image intensified camera for ultraviolet and visible wavelengths and a 150 band hyper-spectral imager.
“Waypoint’s astronomical capabilities are impressive,” says League. “Without the distorting effects of Earth’s atmosphere, our 48 megapixel imager can take perfect high resolution images every time. We can reach the maximum theoretical resolution for our main mirror at .6 arc seconds per pixel on a single image, and higher resolution is possible through multiple exposures. Contrast will be fantastic, with the blackness of background space not being washed out by Earth’s atmosphere, clouds, moisture, city lights, or the day/night cycle. The Waypoint satellite also includes a complete set of astronomical and earth observations filters.”
The Waypoint Space Telescope will be ready to launch as a secondary payload by the end of 2019 on a rocket like the SpaceX Falcon 9. The company has also completed its first seed round of investment and is currently crowdfunding through a Kickstarter campaign.
Those who pledge their money will have the honor of getting a “space selfie”, where a favorite photo will be paired with a backdrop of Earth, pictured from orbit. In addition, Space Fab is building its own custom laser communications systems for the telescope optimized for low power, small size, and high speed.
Once deployed, this communication system will allow the telescope to download data back to Earth twice a day using optical ground stations. These images will then be available for upload via smartphone, tablet, computer or other devices. Chung and League’s efforts to create the first accessible telescope is already drawing its share of acolytes. One such person is Dustin Gibson, one of the owners of OPT Telescopes. As he told Universe Today via email:
“So far, the company is on the fast track to success with its first round of investing completed and over target, and the second round just getting started. It looks like this thing is going to fly in 2019! For an astrophotography lover like myself, I can’t think of anything more ground breaking than a consumer controlled space telescope.
“What Space Fab is doing is rewriting not just how we think about ways in which to do land surveys or deep space imaging, but actually redefining the way we are able interact with satellites by giving the common user a level of control over the movements and functionality of the unit itself with something as simple as a cell phone.”
Looking ahead, Space Fab is also busy developing the technology that will allow them to mine asteroids and tap the abundant resources of the Solar System. The company recently filed a patent for their ion accelerator, which is designed to augment the thrust from existing cubesat-sized ion engines.
The company is also focused on creating advanced robotic arms that will be able to wrestle with space debris and repair themselves in the event of mechanical failure or damage. In the meantime, the Waypoint is the first of several space telescopes that Space Fab hopes to deploy in order to generate revenue for these ventures.
“Our space telescopes will be open to everyone, so that is the beginning,” said League. “The revenue these satellites will generate provides us with the funds and knowledge base to conduct metal asteroid mining and manufacturing on a large scale. This will allow the manufacture of large structures, spacecraft, tools or anything thing else that is needed in space. With these available resources, our hope is to accelerate the space economy and colonization.”
In this respect, Space Fab is in good company when it comes to the age of NewSpace. Alongside big-names like SpaceX, Blue Origin, Planetary Resources, and Deep Space Industries, they are part of a constellation of companies that are looking to make space accessible and usher in an age of post-scarcity. And with the help of the general public, they just might succeed!
The launch of the PSLV-C40 rocket from the First Launch Pad at the Satish Dhawan Space Centre. Credit: ISRO
In 2009, Arkyd Aeronautics was formed with the intention of becoming the first commercial deep-space exploration program. In 2012, the company was renamed Planetary Resources, and began exploring the ambitious idea of asteroid prospecting and mining. By harnessing Near-Earth Objects (NEOs) for their water and minerals, the company hopes to substantially reduce the costs of space exploration.
A key step in this vision is the deployment of the Arkyd 6, a CubeSat that will begin testing key technologies that will go into asteroid prospecting. Last week (on Friday, January 12th), the Arkyd-6 was one of 31 satellites that were launched into orbit aboard an Indian-built PSLV rocket. The CubeSat has since been deployed into orbit and is already delivering telemetry data to its team of operators on the ground.
The launch was not only a milestone for the asteroid prospecting company, but for commercial aerospace in general. For the purposes of creating the Arkyd 6, the company modified commercial-available technology to be used in space. This includes the mid-wave infrared (MWIR) sensor the spacecraft will use to detect water on Earth, as well as its avionics, power systems, communications, attitude determination and control systems.
The Arkyd-6 deploying from the PSLV rocket that carried it into orbit. Credit: ISRO
This process is central to the new era of commercial aerospace, where the ability to adapt readily-available technology will allow companies to have control over every stage of the development process, as well as significantly reducing costs. As Chris Lewicki, the President and CEO Planetary Resources, said in a recent company statement:
“The success of the Arykd-6 will validate and inform the design and engineering philosophies we have embraced since the beginning of this innovative project. We will continue to employ these methods through the development of the Arkyd-301 and beyond as we progress toward our Space Resource Exploration Mission.”
The company hopes to mount the Space Resource Exploration Mission by 2020, which will involve multiple spacecraft being deployed as part of a single rocket launch. These will be carried beyond Earth’s orbit and will use low-thrust ion propulsion systems to travel to asteroids that have been prospected by Arkyd-301. Once there, they will collect data and collect samples for analysis.
During the course of the Arkyd-6’s flight, 17 elements will be tested in total, the most important of which is the MWIR imager. This instrument will be the first commercial infrared imager to be used in space and relies on custom optics to collect pixel-level data. With this high-level of precision, the imager will conduct hydration studies of Earth to determine how effective the instrument is at sniffing out sources of water on other bodies.
Planetary Resources onfographic, showing the process of asteroid prospecting. Credit: Planetary Resources
Based on the findings from this initial flight, the company plans to further develop the sensor technology, which will be incorporated into their next mission – the Arkyd-301. This spacecraft will be the first step in Planetary Resources plan to make asteroid mining a reality. Using the same technology as the Arkyd-6 (with some refinements), the spacecraft will be responsible for identifying sources of water on Near-Earth Asteroids.
These asteroids will be the target of future missions, where commercial spacecraft attempt to rendezvous and mine them for water ice. As Chris Voorhees, the Chief Engineer at Planetary Resources, said:
“If all of the experimental systems operate successfully, Planetary Resources intends to use the Arkyd-6 satellite to capture MWIR images of targets on Earth’s surface, including agricultural land, resource exploration regions, and infrastructure for mining and energy. In addition, we will also have the opportunity to perform specific celestial observations from our vantage point in low Earth orbit. Lessons learned from Arkyd-6 will inform the company’s approach as it builds on this technology to enable the scientific and economic evaluation of asteroids during its future Space Resource Exploration Mission.”
All told, there are over 1600 asteroids in Near-Earth space. According to Planetary Resources own estimates, these contain a total of 2 trillion metric tons (2.2 US tons) of water, which can be used for the sake of life support and manufacturing fuel for space missions. By tapping this abundant off-world resource, they estimate that the associated costs of mounting missions to space can be reduced by 95%.
Much like SpaceX’s ongoing development of reusable rockets and attempts to create reusable space planes (such as the Dream Chaser and the Sabre Engine), the goal here is to make space exploration not only affordable, but lucrative. Once that is achieved, the size and shape of space exploration will be limited only by our imaginations.
And be sure to check out this video from Planetary Resources that outlines their Exploration Program:
“The success of the Arykd-6 will validate and inform the design and engineering philosophies we have embraced since the beginning of this innovative project,” said Chris Lewicki, President and CEO, Planetary Resources. “We will continue to employ these methods through the development of the Arkyd-301 and beyond as we progress toward our Space Resource Exploration Mission.”
