Revealed for the first time in all its glory - the main mirror of the James Webb Space Telescope, which will be launched in 2018.
JWST is regarded as the successor to Hubble, and will carry technologies capable of detecting the light from the first stars to shine in the Universe.
Paramount in that quest will be a large primary reflecting surface.
And with a width of 6.5m, JWST's will have roughly seven times the light-collecting area of Hubble's mirror.
It is so big in fact that it must be capable of folding. Only by turning the edges inwards will the beryllium segments fit inside the telescope's launch rocket.
The observatory is currently under construction at the US space agency's Goddard Space Flight Center in Maryland.
When in recent months engineers stuck down the segments to their support structure, each hexagon had a cover on it.
Only now, as the engineers prepare to move to the next stage of assembly, have those covers been removed to reveal the full mirror.
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