Resources · The concept
Space glossary
The words of space, explained simply and without jargon, with concrete examples and the pitfalls to avoid.
Terminology index· 2 terms
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All terms
Gravity assist
intermediaire Mécanique
A maneuver that uses a planet's gravity to gain or lose speed without fuel.
Delta-v (Δv)
avance Mécanique
A measure of the propulsion effort needed for a change of trajectory. The energy 'budget' of a mission.