When neutron stars collide, they produce a powerful explosion. The first collision that astronomers have clearly observed has shown that, contrary to expectations, the explosion was perfectly spherical. The formation of the spherical shape is still a mystery to researchers, but the discovery could open new doors in fundamental physics and the determination of the age of the universe.
Finland closed the Russian border due to the attack on Ukraine last year, but that has not reduced the flow of Russian shoppers arriving from Norway. The Finnish Customs agency is unable to intervene as Norway is in the Schengen area.
Multiple papers discuss the possible ripple effects of Turkish President Erdogan's anger with Sweden, after a provocation by a Swedish far-right politician.
A consortium of industrial companies and academic institutions launched on January 1 an EU-funded project that seeks to enhance the productivity of sh.