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Overall, the Webb telescope is in excellent condition. Here's what you need to know about the observatory that will revolutionize cosmology.
Webb must exceed expectations, and this is crucial. JWST has performed better than expected nearly across the board, according to Webb's scientists.
In addition to that, Webb's scientists have determined it has enough finite fuel on board to power the mission for 20 years.
The telescope used less propellant than planned to reach its outpost 1 million miles from Earth. NASA hoped the instrument would last five years and was initially pleased to find it would last over 10.
While scientists prepared the $10 billion telescope for its much-anticipated science operations, they detected six impacts from micrometeoroids.
Approximately one hit was expected every month. Any spacecraft will inevitably encounter micrometeoroids, according to the report. Five of the six hits had negligible effects.
The impact, however, caused an 'uncorrectable change' in one of Webb's 18 hexagonal mirror segments (segment C3) between May 22 and 24.
At over 21 feet across, the observatory's mirror - which collects faint light from the extremely distant cosmos - is quite large. As a result, most of the telescope is not damaged.
Whether the May 2022 impact on segment C3 was an unusual event or whether the telescope is more susceptible to micrometeoroids than pre-launch models predicted, was left uncertain.
NASA and its Webb partners may consider minimizing the amount of time the telescope peers in directions where more micrometer micrometeoroids through space, or pointing the telescope away during certain meteor showers if it appears Webb is at a higher risk for damage.
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