Enlarge / What a Supernova spacecraft might look like in orbit. (credit: Portal Space Systems) Over the course of the last seven decades, the vast majority of satellites have launched into orbit with propulsion mostly as an afterthought. That's not to say having thrusters is not important, but once the vehicle reached its intended orbit, the on-board propulsion was used mainly for station keeping and small maneuvers. One of the truisms about spaceflight, in fact, has been that a vehicle isn't going anywhere after it reaches a particular orbit.

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  • New space company seeks to solve orbital mobility with high delta-v spacecraft
    The company's founder, Jeff Thornburg, said Portal Space will focus on mobility in ... the relative delta-v costs to go places from there are lower, but still high. For example, it costs another ...
    04/30/2024 - 2:31 am | View Link
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