On Wednesday 28 October, children aged 9 to 12 will gather at Biblioteca Sarrià, J. V. Foix in Barcelona for a free astronomy workshop. The session runs from 17.30 to 19.30, and each participant will make a small galaxy to take home.
The programme is called #EstàsON: ¡Dentro del universo explorando estrellas y galaxias! It will take place at Plaça de Sarrià, 1, in the Sarrià neighbourhood of the Sarrià-Sant Gervasi district. The two-hour session pairs an introduction to space with practical work and a lecture.
Children will take part as young astronomers. Xarxa Punt TIC describes the wider #EstàsOn programme as around ten practical STEAM workshops at Canòdrom, running from September to December. The sessions use games and experiments for children aged 6 to 12, including a workshop on stars and galaxies for the 9 to 12 age group. They pair digital learning with science and hands-on activities.
The session will examine what stars are and how they form, then trace how starlight travels through space. It will also cover how people have used the sky to find their way for thousands of years.
Constellations and galaxies are also on the programme. Children will use digital tools similar to those used by scientists to explore the sky before trying a hands-on task.
Each child will make a galaxy in a jar and take it home afterward. The organisers describe the finished object as a small piece of the universe.
The European Commission Representation in Barcelona reported that Catalonia’s 2026 European Researchers’ Night featured more than 200 activities during the week at venues including libraries and civic centres. The event puts local workshops such as this one within a wider regional programme that brings science to the public.
Admission is free, but families must register in advance. They can sign up through Biblioteca Sarrià, J. V. Foix or by calling 930 885 220. Registration runs from 28 September 2026 until 17.00 on 28 October 2026.
Biblioteques de Barcelona is organising the event with Barcelona Activa. It is for children between nine and twelve, and families are invited to take part. There is no separate adult programme.
Barcelona libraries and civic centres often host free or low-cost learning and community activities. Barcelona Urbana has described this wider use of city venues in its overviews of Barcelona libraries and civic centres.
For families in Sarrià, the offer is a weekday afternoon astronomy session, with galaxies among its subjects and no admission fee. Places must be booked in advance, and the age range keeps the session focused.
The workshop gives children a direct way into astronomy. They hear about space and use digital tools, then make something themselves. That offers a different experience from a standard talk.
