On December 26, 2015 at 03:38:53 UTC the LIGO Scientific Collaboration and the Virgo collaboration observed gravitational waves – ripples in the fabric of spacetime – for the second time. The gravitational waves were detected by both of the twin Laser Interferometer Gravitational-Wave Observatory (LIGO) detectors, located in Livingston, Louisiana, and Hanford, Washington, USA.

For the first time in history scientists have observed some “wrinkles” on the spacetime “fabric”. These gravitational waves have arrived to Earth from a distant point in the Universe where some catastrophic event had taken place. The observation has confirmed one of the most profound consequences of the General Theory of Relativity proposed by Einstein in 1915 and has opened up quite new perspectives in research on the Universe.

70 cosmology researchers from the entire world – among them some world-famous scientists – are going to attend Symposium to be held between August 24-28 in Warsaw in commemoration of the most famous Polish cosmologist – late Professor Roman Juszkiewicz.