3 ms·
Headline question - do they believe, or do they know? If the former - I worry for any space agency that can't do basic math.
by slackfan 5y ago
Headline question - do they believe, or do they know? If the former - I worry for any space agency that can't do basic math.
- jffry 5y agoArticle answer to your headline question: "It's around 20 years of propellant, roughly speaking,” though he added that it’s a preliminary estimate. There are likely many factors that influence propellant usage which are unknowable - for example, photon pressure from the sun, which can vary over time in an unpredictable way.