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47:19but it's very specific. What it's trying to do is basically stare at the stars that have transiting planets. And what they want to do is disentangle when we see a planet going in front of the star and the sort of light coming from the star going down versus if the star has a sunspot >> and the sunspot has come this way and now all of a sudden I'm just seeing less light because part of the star is dark. >> Right. >> Right. It's very hard to disentangle the two. But if you just like stare at something for a long enough time, you'll have an averaged out version of what that star should look like and then you'll have a much better idea of what the planet looks like when it goes in
48:01front of the star. >> Yes. >> You can disentangle those two aspects. >> Yes. >> It's only in charge of 20 planetary systems. It's got a year's worth of Oh, really? >> Yeah. It's so it's it's kind of like a pilot project in some sense but not really because you know even 20 getting that understanding for just 20 at that precision is going to be vital for interpreting data from larger missions like the James web space telescope. You can use that understanding for how stars work and then now start applying it to when the James Web looks at some something right? >> Mhm. Mhm. This goes back to our point we