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by pfdietz
1595 days ago
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Accelerating ISM ions near your destination requires no additional energy at all -- it's just drag. The kinetic energy of the vehicle suffices. The Local Group is embedded within the WHIM -- Warm/Hot Intergalactic Medium. This is a hot, ionized gas with density maybe a few ions per cubic meter, maybe 100,000x less dense than the ISM in our galaxy. Even better, it's ionized: a magnetic field will enable the ions to be guided around the vehicle without any erosion whatsoever. |
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