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University of Graz News Dunkle Materie, dunkle Energie

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Monday, 04 May 2015

Dunkle Materie, dunkle Energie

Arnold Hanslmeier (Mitte) mit "Wissensdurstigen" Lukas Grumet (links) und Christian Fercher Foto: Uni Graz/Schweiger

Arnold Hanslmeier (Mitte) mit "Wissensdurstigen" Lukas Grumet (links) und Christian Fercher Foto: Uni Graz/Schweiger

Arnold Hanslmeier faszinierte mit den Rätseln des Weltalls

In die weiten, unbekannten Welten des Weltalls entführte Astrophysiker Arnold Hanslmeier das Publikum in der Uni-Graz-Reihe „Wissensdurst – die Wissenschaftsviertelstunde im Pub“ im Lokal Brot & Spiele am 29. April 2015. „Alles begann mit dem Big Bang, dem Urknall, vor 13,6 Milliarden Jahren“, rechnete Hanslmeier vor.

Zur Dimension des Universum stellte er einen anschaulichen Vergleich an: „Wenn das Universum in einer Pizza-Schachtel Platz hat, befindet sich drumherum die sogenannte dunkle Materie.“ Wie die genau aussehe, gehöre zu den großen Rätseln und zu den verbotenen Fragen“, schmunzelte der Forscher in der angeregten Diskussion mit den zahlreichen Gästen. „Vieles sprengt einfach die menschliche Vorstellungskraft.“

Spannend sei es festzustellen, dass sich das Universum jetzt schneller ausdehne als nach dem Urknall. „Das bewirkt die dunkle Energie“, erklärte Hanslmeier. Diese Kraft sei auch vorherrschend im Weltall. „Denn mit den Teleskopen sehen wir insgesamt nur fünf Prozent des Universums.“

Die Veranstaltungsreihe „Wissensdurst – die Wissenschaftsviertelstunde im Pub“ ist Teil der 7. fakultät, des Zentrums für Gesellschaft, Wissen und Kommunikation an der Uni Graz. Das Projekt wird von den Doktoranden Christian Fercher und Lukas Grumet geleitet.

created by Andreas Schweiger

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Jurassic Sounds: Biologist reconstructs insect songs from 165 million years ago

It was apparently not just the roars of the dinosaurs that made up the soundscape of the animal world during the Jurassic period. Crickets and grasshoppers communicated through a variety of songs and high-pitched sounds, as Thorin Jonsson from the Institute of Biology at the University of Graz discovered together with colleagues from the universities of Lincoln, Bristol (UK), Beijing (China) and Tempe (USA). The findings on what are so far the oldest traces of sound on Earth have just been published in the journal PNAS.

EU funding boosts international exchange between universities

The University of Graz is further expanding its international study opportunities through the European university alliance Arqus and is taking the lead in two key projects. In future, students will benefit from even more joint degree programmes and from simplified recognition of academic achievements through the Joint European Degree Label.

Rescue and risks: Researchers have surveyed public perceptions of AI

The use of artificial intelligence has had to be made transparent since 2 August 2026. The EU’s AI Act, which has been in force since then, also sets out how risky an application is and which security measures apply as a result. However, the assessment of risks by the legislation differs in some cases significantly from the perceptions of the Austrian public. This is the finding of a representative study carried out by data scientist Stefan Thalmann from the University of Graz and his team.

The Healing Sea: Researchers discover new approaches to treating chronic inflammation in sponges

Chronic inflammation plays a key role in many diseases, ranging from metabolic disorders and cardiovascular diseases to tissue damage following injuries or infections. “Normally, the body is able to resolve inflammation on its own. If this process becomes unbalanced, immune cells remain permanently active and continue to drive negative changes in the tissue,” explains Andreas Koeberle, a pharmacist at the University of Graz.

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