In early March, the James Webb Space Telescope mirror wings just deployed to their full open position.
Webb needs the 6.5 meter primary mirror to capture light from some of the faintest objects in the Universe.
But it is so large it must fold to fit into the Ariane 5 rocket fairing.
A deployment test uses the telescope's internal electronic system.
This offloads the weight of the mirrors.
The mirrors will be weightless in space.
This deployment is one of the many final tests before launch.
This will be the mirror's final configuration,
once in space.