Feasibility study of a mission to Sedna - Nuclear propulsion and solar sailing

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A Hacker News discussion revolves around the feasibility of a mission to Sedna, a distant object with a perihelion in 2075-2076. The discussion highlights the need for a launch soon, especially with conventional propulsion. Nuclear propulsion, specifically Direct Fusion Drive (DFD), is discussed as a potential solution, with companies like Princeton and Pulsar Fusion developing related technologies. Concerns are raised regarding the readiness and reliability of these technologies, with parallels drawn to past failed projects like Skylon. Some suggest that focusing on fusion propulsion might be more beneficial than fusion power. There's also optimism about the potential for interstellar travel using laser-pushed lightsails. The challenges of nuclear propulsion, including safety concerns related to launch failures and potential proliferation risks with highly enriched uranium, are also debated. Project Orion, a nuclear pulse propulsion concept, is fondly remembered, though its practicality and environmental impact are questioned.

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