Microscope
Micro-Satellite à traînée Compensée pour
l'Observation du Principe d'Equivalence
Will test the equivalence principle described by Albert Einstein.
In space, it is possible to study the relative motion of two bodies in almost
perfect and permanent free fall aboard an orbiting satellite, shielded from
perturbations encountered on Earth (notably seismic).
CNES is providing 90% of funding for this mission (EUR 70.4 million).
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Prime
contractor
|
CNES
|
Platform
|
Myriade
|
Mass
at launch
|
303
kg
|
Dry
mass
|
|
Dimension
|
|
Solar
array
|
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Stabilization
|
|
DC
power
|
|
Design
lifetime
|
1
year
|
The satellite carries two concentric cylindrical test masses made of different
materials - one titanium and one a platinum-rhodium alloy. Their movement will
be minutely controlled inside independent differential electrostatic
accelerometers to keep them motionless with respect to the satellite. If the
equivalence principle is verified, these two masses will be subjected to the
same control acceleration; if different accelerations have to be applied, the
principle will be violated - an event that would shake the foundations of
physics.