Asteroid mining, once confined largely to science fiction, is attracting increasing scientific interest as a potential source of valuable space-based resources. Researchers say that while many asteroids contain vast quantities of metals and water, significant technical, economic and legal barriers still stand in the way of commercial exploitation.
A recent study assessing the feasibility, opportunities and challenges of asteroid mining found that many asteroids are rich in platinum, gold and iron, as well as water that could be converted into rocket fuel. Some space rocks are believed to contain mineral resources worth trillions of dollars.
The research focused on carbon-rich, or C-type, asteroids, which make up about 75 percent of known asteroids. Led by scientists from the Institute of Space Sciences (ICE-CSIC) and published in the Monthly Notices of the Royal Astronomical Society, the study suggests these asteroids could become an important source of raw materials for future space exploration and industrial activity.
Professor Jacinto Alonso-Azcarate of the University of Castilla-La Mancha analysed meteorite samples selected by the research team. The study’s lead author, astrophysicist Josep M. Trigo-Rodriguez of ICE-CSIC, said the samples provide critical insight into the chemical composition and evolutionary history of small, undifferentiated asteroids.
Researchers said years of laboratory experiments helped them better understand how exposure to space conditions alters asteroid structure and mineral composition, describing the findings as the product of sustained international collaboration.
Despite the promise, scientists caution that asteroid mining faces steep obstacles. The cost of reaching asteroids and extracting materials remains extremely high, while many of the required technologies are still under development. Processing resources in microgravity and managing waste could also create serious operational and environmental challenges.
Trigo-Rodriguez noted that extracting water from water-rich carbonaceous asteroids may be more achievable in the near term. Such water could support space missions by providing fuel, oxygen and other essential resources, potentially lowering the cost of exploration beyond Earth orbit.
In addition to technical and financial barriers, regulatory uncertainty remains a major concern. The 1967 Outer Space Treaty prohibits nations from claiming ownership of celestial bodies, raising unresolved legal questions about how commercial mining activities in space should be governed.
Researchers conclude that while asteroid mining holds long-term promise, major advances in technology, cost reduction and international legal frameworks will be needed before it can become a practical reality.
Source: UNB
Bd-pratidin English/ Jisan
