Design and Development of the LASPA Experiment Cube for Dual Terrestrial and ISS Operations
摘要
Development of systems and techniques that can sustain and optimize plant growth in microgravity is one of the key milestones towards the manned exploration of the Solar System. Laser stimulation of plant seeds is a promising avenue of research, offering significant gains in both germination rates of the seeds and plant biomass yield. We present a compact (1U), semi-automated system which will perform an experiment using laser stimulation of garden cress (Lepidium sativum) using blue (CWL 447 nm) and green (CWL 520 nm) light. The growth of stimulated plants will be compared between different wavelengths and a control group of unexposed seeds. The experimental setup involves irradiating garden cress seeds with laser light before their placement in a semi-controlled grow-chamber aboard the ISS. Environmental parameters will be monitored alongside regular imaging in the visible (VIS) and near-infrared (NIR) spectral ranges to assess plant morphology and health. Dedicated electronic systems and a microfluidic setup will provide the plants with light and nutrients during the experiment. A parallel ground-based control group will allow us to discern the influence of microgravity and related factors on the experiment outcomes. We hypothesize that our findings will contribute to optimizing space agriculture methods, potentially increasing estimated plant size by up to 70%, with implications for terrestrial agriculture and astronaut sustenance through in vitro plant cultures.