The engineers who built the telescope were well aware of the conditions in space, so Webb was
"We knew Webb would have to endurespace environment, which includes harsh ultraviolet light and charged particles from the Sun, as well as cosmic rays from unusual sources and frequent micrometeorite impacts,” says engineer and technical deputy project manager Paul Geithner of NASA Goddard Space Center.
Since its launch, the observatory has been hitat least four micrometeoroids, but their size was well within NASA's design expectations and safety requirements.
However, the micrometeoroid that fell intotelescope, was larger than anything considered in NASA's ground tests. It could not be predicted because it was not part of any known meteor shower that could be avoided.
He had a "weakly detectable effect" on the transmitted data - engineers continue to analyze the consequences of the collision.
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