Themes: Universe and gravitation
See allBlack Holes: The most secret places in the Universe
Let’s review the historical journey that is taking us more and more closer to the secrets of black holes, width Francisco Lobo, of IA.
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Astronomy in Questions and Answers
Discover more about the Universe, in a Q&A session with a panel of five researchers, included in the 30th Encontro Nacional de Astronomia e Astrofísica.
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Listening to the Universe
Astronomy with gravitational waves
We’ve seen throughout millennia a silent movie of the Universe. Since 2015, we started to listen to it at last. With the gravitational waves astronomy, we are listening to the Universe, and it has much more to tell us. By Lara Sousa, of IA.
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Multiverse
Modern theories of cosmology appear to predict that our region of space is a minuscule fragment of a huge ‘multiverse’, where over vast distances physical properties, and perhaps the nature of physical laws themselves, can change.
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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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