What was the total cost of the Cassini-Huygens mission?
Cassini–Huygens was an international robotic mission built to explore Saturn, its rings and its moons. NASA's Cassini orbiter travelled with the European Space Agency's Huygens probe, which later descended through Titan's atmosphere.
Final project cost
$3.9 billion
Cost basis: 2017
The short answer
$3.9 billion
NASA reports a total mission cost of $3.9 billion. That figure combines roughly $2.5 billion in pre-launch spending with about $1.4 billion for post-launch operations, tracking and partner contributions over the long mission.
Cost evidence
Basis of the published figure
What the number includes
Cost scope
The figure is broader than the price of a single spacecraft. It covers development before launch, contributions from mission partners, and the operations and tracking needed from the 1997 launch through the mission's 2017 conclusion.
Project record
Timeline
Project context
About Cassini–Huygens
Cassini spent nearly two decades in space and more than thirteen years studying the Saturn system. Its long operating life helps explain why a mission-level cost is more useful than quoting hardware alone.
Reading the data
How to interpret the figure
The source amount is already reported in US dollars, so Clueterra applies no currency conversion. The answer is shown in the same nominal dollars and scope used by NASA.