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View submission: Does Omega Centauri have exo-planets?
The original mindset on exoplanets in globular clusters was that they would not survive long beyond formation, as the stars as so closely packed in, the dynamical instabilities would rip planets apart. This is changing and people are now considering looking for exoplanets in GCs, but to my knowledge none have been found yet.
The second complication is that exoplanetary signals are small compared to their host stars, on the order of a few percent at the largest and generally much smaller than that. This is for planets around a star that can be singled out. For stars in GCs, it ranges from hard to impossible to spatially resolve and isolate single stars, and so a single planetary signal would have to compete with the light from many many stars at the same time. Alternatively, multiple planetary signals around different stars all clumped together into a single observation would be difficult to disentangle and might be hard to correctly identify.
There's nothing here!