Tags Jeff Greason Tau Zero Foundation Electric Sky advanced propulsion Nuclear propulsion nuclear propulsion history beamed-power for launch vehicles beamed-power for air travel electricity electrical grid storage batteries fuel mass propellant electricity prices vs. fuel prices company size and overhead lowering launch costs increasing the launch market reusability human spaceflight Artemis large flagship government programs anti-matter propulsion Cislunar development lunar industrialization electric air travel private sector development speed technology searches electric propulsion range first stage rockets UAVs NASA NIAC awards environmental regulations plasma magnets solar wind sail green power for Earth to orbit beam technology laser frequency supersonic propellers electric jets hi-speed supersonic electric aircraft wave length issues Guest Mr. Jeff Greason Tagline advanced propulsion updates, Jeff's new business activities and projects View the discussion thread.