User:Py4nf

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pt-N	Este utilizador tem como língua materna o português.

en-3	This user has advanced knowledge of English.

es-1	Este usuario tiene un conocimiento básico del español.

fr-1	Cet utilisateur dispose de connaissances de base en français.

I have a Ph.D. degree in Astrophysics and work as a Physics professor, so I'm happy to help with articles both in Physics and Astrophysics.