Research and Study at the University of Excellence in Bonn

The universe is expanding. How fast it does so is described by the so-called Hubble-Lemaitre constant. But there is a dispute about how big this constant actually is: Different measurement methods provide contradictory values. This so-called “Hubble tension” poses a puzzle for cosmologists. Researchers from the Universities of Bonn and St. Andrews are now proposing a new solution: Using an alternative theory of gravity, the discrepancy in the measured values can be easily explained - the Hubble tension disappears. The study has now been published in the Monthly Notices of the Royal Astronomical Society (MNRAS).

Henry Kissinger has died, at the age of 100 in his home in Connecticut, whose legacy includes the Henry Kissinger Professorship for Security and Strategy Research at the University of Bonn.

Where and how can diversified farming practices be put to profitable use in order to boost both productivity and biodiversity? Researchers at the University of Bonn have tackled this question in a study that has now been published in “Communications Earth & Environment.”

For successful fertilization, sperm should move forward rapidly and be shaped correctly. The unique structure of the sperm cells forms during spermiogenesis. Now, researchers from the University Hospital Bonn (UKB) and the Transdisciplinary Research Unit "Life & Health" at the University of Bonn have found that fertility problems in both mice and humans can be caused by loss of so-called cylicines. This causes defects in head and tail structure of sperm. The results of the study have now been published in the scientific journal "eLife".