September 12, 2025

Artist's impression of a neutron star collision – one of the known sources of gamma rays. Credit: ESO/L. Calçada/M. Kornmesser

Unusual gamma-ray burst: lasted a day and repeated itself

The GRB 250702B event violates all existing models – it may be a medium-mass black hole or an extremely rare core collapse
The binary star system V Sagittae – 10,000 light-years from Earth – shines brightly because a voracious white dwarf is devouring its larger twin. Credit: University of Southampton

A hungry star is devouring its cosmic twin at a rate never before observed * In a few years we will be able to see the supernova in daylight

The V Sagittae system, 10,000 light-years away, is expected to end in a supernova so bright it will be visible from Earth during the day.
Archaeologists attribute these simple urns, buried as burial gifts in the 8th and 9th centuries AD, to the ancient Slavs. Credit: Archaeological Museum Zadar

Ancient skeleton genome reveals: Slavic people originated in large-scale migration from Eastern Europe after the fall of the Roman Empire

Comprehensive DNA research suggests that the Slavicization of Europe resulted from a large population movement after the fall of the Roman Empire, rather than from language assimilation by local elites
Gravitational waves emitted by colliding black holes hold clues about these hidden objects. Credit: Maggie Chiang / Simons Foundation

The most powerful black hole collision since the phenomenon was discovered confirms Einstein's theory and Hawking's prediction

An extremely strong gravitational wave measured at LIGO has made it possible for the first time to experimentally verify the principle that the area of ​​a black hole's event horizon cannot decrease. Concern: The government wants to close the LIGO project