Orbital Debris Space Debris Lunar Surface Near-Earth Objects Lunar Environment Space Debris Management Asteroids Asteroid Impact Solar Activity Lunar Conditions Asteroid Threats Cosmic Radiation Space Sustainability Planetary Bodies Orbital Mechanics Microbial Ecosystems Microbial Life in Space Martian Environment Radiation Effects Space Junk Light Pollution Orbital Debris Mitigation Asteroids and Comets Human Impact on Space Interstellar Space Debris Management Radiation Air Leakage Solar Winds Contaminants in Space Orbital Dynamics Impact of Human Activity Human Impact Space Research Applications Lunar Regolith Impact of Tourism Asteroid Risks Asteroid Hazards Asteroid Characteristics Asteroid Impact Risks Solar Observations Orbital Regimes Celestial Events Chemical Composition Microbial Communities International Space Station Microbial Environment Earth's Orbit Impact Risks Mars Conditions Satellites Lunar Geography Microgravity Solar Influence on Earth Orbital Debris Management Lunar Surface Conditions Microgravity Effects Space Debris Mitigation Planetary Atmospheres Planetary Environments Planetary Habitats Mars Environment Lunar Resources Low-Earth Orbit Magnetosphere Space Weather Low Earth Orbit Closed Ecosystems Radiation Environments Microbial Ecology Asteroid Impacts Threats to Earth