We have launched a live stream at our Observatory! Did you know that meteors can not only be seen but also detected using antennas? Even during the day, whatever the weather—clouds or rain. There are currently two radio meteor observation stations operating at the Observatory at Fort. They use the phenomenon of radio echoes.

Among the several million radio galaxies discovered to date, astronomers have recently identified several peculiar classes that deviate from the classical view of these objects. Studying unusual giant double-double radio galaxies is helping astronomers understand the nature of active supermassive black holes located at the centers of some galaxies.

30 czerwca 2026 r. zapraszamy do wspólnego obchodzenia Międzynarodowego Dnia Planetoid na Wydziale Fizyki, Astronomii i Informatyki Stosowanej UJ oraz w Obserwatorium Astronomicznym UJ. W programie znajdą się wykłady popularnonaukowe, warsztaty, przejazd zabytkowym autobusem (Jelcz RTO 272 MEX) oraz wieczorne zwiedzanie Obserwatorium połączone z obserwacjami nieba.

International team of astronomers led by Jerzy Krzesiński has discovered 42 new hot subdwarfs, including 22 new pulsating stars, 3 candidates for systems containing a pulsating hot subdwarf, and 13 new candidates for close binary star pairs. The discoveries are based on the analysis of observations made by the TESS satellite, monitoring changes in the brightness of millions of stars in the sky.

We provide details of the OAUJ-CDK500, the newest optical telescope at the Astronomical Observatory of the Jagiellonian University, and the hardware and software which enables it to work autonomously as a telescope within the Skynet Robotic Telescope Network.

Another photograph by Marcin Rosadziński has been selected by NASA as the Astronomy Picture of the Day (APOD) — marking the fifth time the photographer has been recognized by this prestigious website.

We invite everyone to visit the exhibition of artists participating in the art and research project focused on the phenomenon of galactic jets—the largest known objects in space.

Galaxies can be divided into two main types. Early-type galaxies are compact and consist mainly of old stars, and their radio emission is primarily associated with the activity of the central black hole. In contrast, late-type galaxies have characteristic spiral arms and a large population of young stars, which largely account for their radio emission. Even among early-type galaxies, however, we observe significant differences. Some of them emit radio waves from regions much larger than the galaxy itself, while others emit only from a small region around the center.