In 2018 Porto/Post/Doc ventured into Porto Planetarium, promoting for the first time ever several sessions in full dome. This year, the festival repeats the feat showing six films designed especially for this format.

The first session includes Paul Flechter's "Home Is Inside Us My Dream Home" and Mickael Le Goff's "Sphere", and takes place on November 23, Saturday at 5:30 pm, repeating at the same time the following Saturday. The second session, which takes place on Sunday, November 24 and December 1, at 5:30 pm, features Jeremy Ourby and Antoine Briot's "Immersive," Marc Zimmerman's "Conscious Existence," Tommy Caron and Sarah's "Áróra" Ouellet, and the Portuguese "Histórias de Além Terra", signed by Leonor Keil. Both sessions take place at Planetário do Porto – Centro de Ciência Viva and tickets can be purchased on site.