A surprisingly simple explanation for 'Oumuamua's weird orbit

In 2017, a mysterious comet dubbed 'Oumuamua fired the imaginations of scientists and the public alike. It was the first known visitor from outside our solar system, it had no bright coma or dust tail, like most comets, and ...

A persistent influence of supernovae on biodiversity

The number of exploding stars (supernovae) has significantly influenced marine life's biodiversity during the last 500 million years. This is the essence of a new study published in Ecology and Evolution by Henrik Svensmark, ...

Mid-twentieth-century physics in the home of Galileo

Florence was a flourishing center for fundamental physics research throughout most of the twentieth century. Roberto Casalbuoni, Daniele Dominici and Massimo Mazzoni—all physicists currently working there—have reviewed ...

Citizen science: From the cosmos to the classroom

Citizen science projects offer the general public, or segments of that public such as school students, an opportunity to take part in scientific research. The Extreme Energy Events (EEE) Project in Italy is a cooperation ...

Antihelium nuclei as messengers from the depths of the galaxy

How are galaxies born, and what holds them together? Astronomers assume that dark matter plays an essential role. However, as yet it has not been possible to prove directly that dark matter exists. A research team including ...

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