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We hardly resolve any individual stars in other galaxies (maybe some giant stars inside Andromeda?), so our idea of chemical composition of other galaxies is very... averaged.

We barely can resolve largest and closest exoplanets into a few pixels.




>We barely can resolve largest and closest exoplanets into a few pixels

For now...

https://arxiv.org/abs/1802.08421

https://www.youtube.com/watch?v=NQFqDKRAROI


This is seriously cool.

This also requires a helluva lot of delta-V from the telescope to realign with another planet.




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