Lecturer: Prof. James Peebles Affiliation: Princeton University Abstract: The LCDM cosmology is well established but certainly not the final theory of what happened as the universe expanded and cooled. I will review phenomenology on the scale of galaxies that seem to me to challenge LCDM and perhaps offer clues to a still better cosmology. Additional details of the upcoming Astrophysics' seminars can be found on the following link. ‏האירוע הזה כולל שיחת וידאו ב-Google Hangouts. הצטרף: https://hangouts.google.com/hangouts/_/mail.huji.ac.il/astrophysics?hceid=bWFpbC5odWppLmFjLmlsX2c0czhydDlpcmhwZzRvdGNybWIzZGFqcjdvQGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20.njomm5nmev3e64l4ajpgdevkd8&hs=121