Space science, in tandem with biotechnology, has opened up new frontiers for scientists to reshape space exploration. From facilitating the production of cells with therapeutic value to cultivating organisms with specific markers – biotechnology holds immense potential to facilitate long-duration space missions and the commercialisation of space travel.
However, bringing what’s developed in the lab to implementation comes with a slew of challenges.
In this article, we’ll dive deeper into the role of biotechnology in space exploration and the challenges it faces.
Importance of Biotechnology in Space Exploration
Untangling the secrets of space is no longer a part of the futuristic fantasy. Thanks to the advances in biotechnology that are significantly paving the way for space research and exploration by helping address challenges regarding astronauts’ health issues, food and water crises, etc.
Before exploring how biotechnology reshapes space science, it helps to establish a clear foundation. At its core, the definition of biotechnology spans a remarkably broad range of disciplines — from genetic engineering and cellular biology to the development of medical tools that monitor and support human health in extreme conditions. Understanding this scope makes it far easier to appreciate why scientists and engineers increasingly view biotech not as a peripheral field, but as a central pillar of next-generation space exploration strategy.
By blurring the line between biology, engineering, and space science, biotechnology offers tools and techniques to overcome these challenges.
Astronauts are being empowered with extreme adaptability and resilience in space by the tools and strategies developed with the knowledge of biotechnology. The result is a sustainable and effective exploration with higher throughput beyond Earth’s orbit.
Let’s dig deeper into how biotechnological advancements facilitate space exploration.
Biotech Applications in Space Exploration
Improving Healthcare
One of the key challenges faced in long-duration space missions is keeping astronauts in optimal physical and mental health conditions. This is because cosmic radiation and microgravity effects in deep space can adversely impact their overall health.
Scientists can now develop precision therapeutic techniques, tailored therapies, and medicines that help deal with health issues humans face in space, thanks to biotechnology.
In addition, ongoing research is being executed on the feasibility of advanced genetic engineering techniques, like genome editing and synthetic biology, to produce effective novel drugs and treatments.
Using biomedical monitoring systems that come with wearables and biosensors stands as a strategic imperative when it comes to enabling real-time tracking of astronauts’ overall health and well-being. Thus, any potential health issues can be tracked down, and preventive measures can be adopted early.
Note: We will explain the microgravity effect later on.
Bioregenerative Life Support Systems: Sustainability in Space
Bioregenerative Life Support System (BLSS) has been marked as one of the leading technologies crucial for facilitating crewed deep space exploration. With BLSS – a closed-loop life support system, researchers aim to generate water, oxygen, and food on site and limit the dependence on the supplies sent from the Earth. It also facilitates waste recycling, thus helping prevent pollution to extraterrestrial bodies.
Needless to mention, biotechnology offers researchers the tools and techniques required to support BLSS. Different biotechnological processes such as genetic engineering, synthetic biology, and microbial biomanufacturing are being heavily leveraged to manipulate plants and microorganisms to recycle waste products into breathable air, drinkable water, and precision food. For example, synthetic biology can be used to turn waste products and in situ destination ground resources into products of less mass, saving as much as 26–85% based on the application compared to traditional abiotic means.
Synthetic Biology: Engineering Life for Space Exploration
Synthetic biology – an intersection between biotechnology and aerospace engineering – aims to harness biotech processes such as genetic engineering and gene synthesis to design, modify, and develop tailored organisms with specific traits. These bioengineered organisms are specially designed to withstand high cosmic radiation and microgravity and are optimised to better adapt to extraterrestrial settings. These tailored characteristics, for example, improved stability, enable these organisms to effectively conduct specific tasks such as resource extraction, nutrient production, participation in terraforming processes, etc.
NASA’s Environmental Control and Life Support System (ECLSS) has reported hitting their water recovery milestone on the International Space Station.
Food Production in Space
Traditional crop cultivation is impossible in space due to the microgravity objects experienced there. Luckily, scientists can now grow edible crops, cultivate microorganisms and genetically modified organisms, etc., to meet the nutrition needs of astronauts there. Biotech techniques, such as genetic modification, show immense potential to help produce these foods with high harvest index and tuber yield.
Research is being conducted on how microbes can be effectively cultivated in the space for production in micro-bioreactors. Thus, astronauts on long-duration space missions can be supplied with tailored and wholesome food supplements.
For example, as part of an effort to expand in-orbit food production capabilities and supply astronauts with fresh food, NASA launched a project Veg-o1 experiment. The project aimed at utilising biotech processes to increase sustainable fresh food production on the International Space Station through an expandable plant growth facility dubbed Veggie.
Challenges with Biotech Processes in Space Exploration
Biotechnology demonstrates immense potential in facilitating space exploration and supporting long-duration missions. However, it faces some challenges that scientists must overcome to bring products developed in labs to lunch.
- Microgravity Effect: Also termed as weightlessness and zero gravity, microgravity is the special condition in space that makes objects and astronauts float due to reduced gravity there. This free fall condition in the space significantly alters cell growth, proliferation, and differentiation, posing significant challenges to different biotech processes. As space travel and sending crewed spaceflights in deep space has become more common, scientists should focus more on gene regulation in cells and organisms to enable optimal efficacy of biotech processes in space.
- Cosmic Radiation: Cosmic rays comprise gamma rays, X-rays, and high-energy charged particles. Long-term exposure to it can significantly affect cell functions, cell variability, protein stability, and different biological materials. For example, the damage to the DNA cosmic rays can cause may affect the outcomes of different biotech processes while simultaneously impacting stability in genetically modified cells. To get the most out of various biotech processes, scientists must ensure the engineered products are immune to harmful cosmic radiation.
- Bioreactors: Bioreactors are instruments that maintain a controlled environment critical to optimally conducting different biological operations. Unlike a conventional bioreactor, a micro-bioreactor needs to be designed with specific attributes – rotating vessels, magnetic stirrers, perfusion systems, etc., – to make biological processes resilient to space’s microgravity effects.
- Nutrient Availability: Limited accessibility to vital nutrients is a big challenge when it comes to long-duration stays in space. As we all know, different biotechnological processes play a pivotal role in maximising resource utilisation and waste recycling by constructing a sustainable BLSS. However, while executing these processes, scientists must ensure these biotechnology-derived products can meet the astraunauts’ nutrient demand.
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