I realized that a methane-oxygen rocket engine could achieve a specific impulse greater than 380.
Elon MuskBrand is just a perception, and perception will match reality over time. Sometimes it will be ahead, other times it will be behind. But brand is simply a collective impression some have about a product.
Elon MuskI'm extremely confident that solar will be at least a plurality of power, and most likely a majority... in less than 20 years.
Elon Musk