Here’s how orbital dynamics wizardry helped save NASA’s next Mars mission

That’s what it took to save NASA’s ESCAPADE mission from a lengthy delay, and possible cancellation, after its rocket wasn’t ready to send it toward Mars during its appointed launch window last year.
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Startup Using Nanotips and Naphthalene for New Satellite Thruster

It sounds like a NASA pipe dream: a new spacecraft thruster that’s up to 40 percent more power efficient than today’s. Even better, its fuel costs less than a thousandth as much and weighs an eighth ...