Florian Freistetter was our chief of astronomy today, and blogged about the day’s astronomy lectures by laureates: 435,457,355 Stars 435,457,355 stars had to be measured for the Hubble Space Telescope to function properly. Riccardo Giacconi began today’s lecture series with the history of X-ray astronomy and the Hubble telescope. And he said that, concerning astrophysics,…