Astronomers have revealed a planet that had been concealed in existing images from the James Webb Space Telescope, using a new processing technique that makes faint worlds far easier to pick out next to their bright host stars. The method works on data already stored in telescope archives, meaning the discovery did not require a fresh observing campaign.
The approach relies on a digital twin of the telescope, a computer model of JWST's optics and behavior. The model is used to predict and subtract the glare of starlight that normally drowns out nearby planets. According to the reporting, the technique can make faint exoplanets between two and fifteen times easier to detect than with conventional analysis.
The team's authors suggest the planet is unlikely to be the only one. Because the method can be applied to archival material gathered over several years, they argue that many more undiscovered worlds could surface as researchers reprocess old observations. The notes available do not give a figure for how many planets might be revealed, and the full scale of what remains hidden is still unknown.
For the wider field, the result points to a way of extracting new science from data that has already been collected, rather than waiting for future missions. Reanalysis of archives could speed up the search for small, faint planets, including those that might one day be studied for signs of habitability.
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