The binary star BD+20 5391 has proven to be an extremely rare case of two red giants of almost identical mass evolving side by side.
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Black holes have been among the most interesting objects in astrophysics in recent years, even though they are distant and difficult to observe. Direct imaging
In June, high school student Jan Herzig won the national round of the High School Science Competition in the field of physics with a paper
On January 31, 2020, the Swift satellite detected a powerful gamma-ray burst designated GRB 200131A. Less than a minute later, the Ondřejov robotic Small Binocular
On Friday, September 26, 2025, from 3 p.m. to midnight, the observatory, including the dome of the largest telescope in the Czech Republic with a