Themes: Galaxies
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What is hidden in the dark sky
What is hidden beyond the edge of the light, in the darkest areas of the sky? Which frontiers of the unknown await astronomers there, and what challenges have yet to be overcome?
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Giant radio galaxies may be more common than previously thought
What is a giant radio galaxy, and what these impressive structures may reveal about the galaxies’ past? José Afonso in an interview to Rádio Observador.
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First Steps to a Great Discovery
Get acquainted with the Zooniverse.org plaform, which allows anyone to do science whenever and wherever, in the company of three IA researchers: João Faria, Lara Sousa and Israel Matute.
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Spiral galaxies. “All we knew was wrong”
Iris Breda explains how a new study about the composition of the disk and bulge of spiral galaxies can question part of what we know about their formation and evolution.
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An optical system designed for the next X rays telescope
IA will lead the development of a precision optical system for ESA’s future space telescope dedicated to the study of extreme events in the Universe.
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In a very distant galaxy: FGC 1287
What mechanism is stripping off gas away from the galaxy FGC 1287 and producing a long tail of neutral hydrogen?
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In a very distant galaxy: 3C 75
Two black holes orbit each other in the centre of collision of two galaxies, in the Abell 400 galaxy cluster.
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In a very distant galaxy: Hercules A
Hercules A is much bigger than what we see in the visible light. Observed in the radio band, it reveals the activity of a central black hole with the mass of 4 billion suns.
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