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I am concerned about the long-term risks of burying high-level used nuclear fuel underground, even with multiple barriers, due to potential unforeseen geological changes over millennia.

As an alternative, I suggest exploring space disposal (e.g., heliocentric orbit or solar impact) for permanent removal from Earth's biosphere. Historical NASA studies from the 1970s–1980s concluded this is technically feasible, particularly for processed waste, with advantages in isolation time and risk profile compared to terrestrial methods.Key references:

• NASA (1978): "Nuclear Waste Disposal in Space" – https://ntrs.nasa.gov/api/citations/19780015628/downloads/19780015628.pdf (primary feasibility analysis)
• NASA (1974): Executive Summary on Space Disposal Feasibility – https://ntrs.nasa.gov/api/citations/19740006420/downloads/19740006420.pdf
• Additional overview (1990s conference paper summarizing issues): https://nss.org/wp-content/uploads/Space-Manufacturing-conference-12-111-Disposal-Of-High-Level-Nuclear-Waste-In-Space.pdf

With modern reusable heavy-lift rockets (e.g., SpaceX Starship) dramatically increasing payload and reducing costs/launch numbers, these options warrant re-evaluation alongside the proposed DGR.Thank you for considering public input.