On July 17th we will be celebrating the 20th birthday of the Chandra X-ray Observatory! We will be meeting at KAJAHU at 7:00 PM. On tap for the evening: an overview of X-ray astronomy, “Exploring the hot & energetic universe through space telescopes”, “Clusters of galaxies and the surprises of their spectacular hot atmospheres “, and an astronomy quiz + prizes! Egészségetekre!