The Planet Hunters

What´s an exoplanet? How is it detected? How is it measured? And how is it weighted?

In the “Planet-Hunters” session, Nuno Cardoso Santos, Sérgio Sousa and Susana Barros, researchers at the Instituto de Astrofísica e Ciências do Espaço (IA) and the University of Porto, will answer these questions and others, sharing their daily work with the children present.

In each session, 3 IA researchers will share their fascination for Astronomy and Astrophysics in 3 short, simple and interactive talks. At the end of each talk, there will be a question and answer session.

Participants may also leave questions that will subsequently be answered by IA researchers. These questions and answers will be published in Visão Júnior magazine or on its website.

IAstro Júnior is a joint initiative run by the Instituto de Astrofísica e Ciências do Espaço (IA) and the young people’s magazine, Visão Júnior, specially designed to 7 to 12 year olds.



1 hour

Free entrance


Activity is free of charge, but registration is required.


Planetário do Porto - Centro Ciência Viva
Rua das estrelas S/N
4150-762 Porto

How to get there

By car
GPS: 41.150716, -8.638462

By Bus  (Stop “Planetário”)
200, 204, 207, 209, 1M