Astronomers everywhere have high hopes for NASA’s James Webb telescope. It is supposed to give us a glimpse of the first stars and galaxies ever formed and the atmospheres of potentially habitable exoplanets. That’s why NASA and its partners had designed it to withstand harsh situations, such as being bombarded by micrometroids flying at extremely high speeds. Between May 23 and May 25, a larger-than-expected micrometeoroid struck one of the telescope’s primary mirror segments. The event was significant enough for NASA to capture a “marginally detectable effect on the data,” but not enough to affect the telescope’s performance.
In the NASA announcement, he said James Webb’s team conducted an initial analysis and found that it was still operating at a level that “exceeds all mission requirements.” The space agency explained that its engineers relied on simulations and performed actual impact tests on mirror samples when it was building the telescope to make sure it was properly fortified. For example, telescope flight equipment can perform maneuvers to keep its optics away from known meteor showers. The recent impact it suffered was classified as an inevitable random event, however, and the micrometeoroid was larger than engineers could have tested on the ground.
The good news is that James Webb has the ability to adjust the positions of mirrors to correct and minimize the results of impacts like this. Its engineers have already made the first of several adjustments to compensate for the damage to the affected segment. The agency has also formed a team of engineers to look for ways to mitigate the impact effects of this scale in the future. Since James Webb is to be Hubble’s replacement and is expected to provide us with invaluable data for the next 10 years, or 20, if all goes well, NASA, the European Space Agency and the Canadian Space Agency will probably the best they can. can to protect the space telescope.
Lee Feinberg, an element manager for the Webb optical telescope at NASA Goddard, said:
“With Webb’s mirrors on display in space, we expected the occasional impact of micrometeoroids to gracefully degrade the telescope’s performance over time. Since launch, we’ve had four shots of smaller measurable micrometeoroids that were consistent with expectations and this is more recent than our degradation predictions. We will use this flight data to update our performance analysis over time and also develop operational approaches to ensure that we maximize Webb’s image performance in the best possible measure for many years “.
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