High

Black carbon deposition in stratosphere

Rocket exhaust deposits black carbon particles in the stratosphere, absorbing solar radiation and contributing to localised warming and ozone depletion.

Journal of Space Safety Engineering

Obligations (1)

Environmental impact assessment for launch sites

Medium

Launch operators must conduct environmental impact assessments covering soil, water, air quality, and wildlife impacts at and around launch facilities.

Opportunities (2)

Electric propulsion systems

Medium

Adopt electric propulsion (ion or Hall-effect thrusters) to reduce propellant mass, eliminate toxic fuels, and enable more flexible mission profiles.

Reusable launch vehicles

High

Support development of fully reusable launch systems to dramatically reduce per-launch environmental impact and cost.