The first electric cars were made in the 1880s. Is Tesla Motors using old technology?
The Mars rovers use lots of new technology (the aerobraking system and “skycrane”, to name one). NASA has certainly experimented with new propulsion technology like VASIMIR and ion drives, it’s just that these are high-specific-impulse low-thrust platforms unsuitable for launch but good for maneuvering once in orbit. Not all aspects of a field will advance at the same rate. Compare processing power to battery capacity, for example.
The first electric cars were made in the 1880s. Is Tesla Motors using old technology?
The Mars rovers use lots of new technology (the aerobraking system and “skycrane”, to name one). NASA has certainly experimented with new propulsion technology like VASIMIR and ion drives, it’s just that these are high-specific-impulse low-thrust platforms unsuitable for launch but good for maneuvering once in orbit. Not all aspects of a field will advance at the same rate. Compare processing power to battery capacity, for example.