Themes: Galaxies
See all![Davi Barbosa na Feira do Livro de Lisboa 2024 (parceria Gradiva)](https://divulgacao.iastro.pt/wp-content/uploads/2024/06/davibarbosa-feiralivrolx2024-388x218.jpg)
Galaxies – a collection of portraits
Davi Barbosa, PhD researcher at IA, took the public at the Lisbon Book Fair on a journey about how Humankind discovered more than a trillion galaxies besides our own Milky Way.
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![O enxame de galáxias SMACS 0723, a 4,6 mil milhões de anos-luz, observado na luz infravermelha com o telescópio espacial James Webb.](https://divulgacao.iastro.pt/wp-content/uploads/2024/02/Webb_smacs0723-5mb-web-388x218.jpg)
Group photo, or the social life of galaxies
Behind a grain of sand is the image above. Let’s be nosy and scrutinise this group photo. Article by Sérgio Pereira and Davi Barbosa, of IA, on National Geographic Portugal.
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![Enxame de galáxias Pandora](https://divulgacao.iastro.pt/wp-content/uploads/2023/11/Pandora-Cluster-jwst_web-388x218.jpg)
Caught in the cosmic web – from galaxies to super-clusters
Galaxies like to be together and socialize, sometimes to the thousands. In galaxy clusters some are dominant, but what keeps them together can’t be seen. Article by Davi Barbosa on National Geographic Portugal
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![Galáxia anã de tipo cometário, ou em forma de “girino”, KISO 5639.](https://divulgacao.iastro.pt/wp-content/uploads/2023/07/Dwarf_galaxy_Kiso_5639-web-388x218.jpg)
Dwarf galaxies: the small inhabitants of the Cosmos
The most common galaxies in the Universe are also the smallest of them, and the hardest to study. They host secrets about how might have been born the great galaxies that we see today. An article by Patricio Lagos on National Geographic Portugal.
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![Terão os buracos negros a resposta para a expansão acelerada do Universo?](https://divulgacao.iastro.pt/wp-content/uploads/2023/02/titulo-388x218.jpg)
Do black holes have the answer to the accelerated expansion of the Universe?
An international team, with the participation of the IA, suggests that the mass of black holes increases with the scale of the Universe, and might be concentrations of dark energy.
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![](https://divulgacao.iastro.pt/wp-content/uploads/2023/02/podcast-Hugo-388x218.png)
Black holes, judo and radiotelescopes
In the podcast Caravela Cósmica, Hugo Messias shared his academic path and spoke about his current job at the ALMA Observatory, in Chile.
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![Um retrato do coração da Via Láctea](https://divulgacao.iastro.pt/wp-content/uploads/2022/10/SagA-video-IA-website-388x218.png)
A portrait of the heart of Milky Way
IA’s views on Sagittarius A*
There’s a colossus at the heart of Milky Way. IA researchers and collaborators take us on to the territories of gravity, high energy physics, and cosmology.
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![](https://divulgacao.iastro.pt/wp-content/uploads/2021/06/O-UNIVERSO-ONLINE-2021_YTcast_Div-FHD-388x220.jpg)
The raiders of the treasures of the Milky Way
Like any other galaxy, the Milky Way is very different from what it was. Discover how a galactic archeologist tries to reveal its past, with Tiago Campante, of IA and University of Porto.
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