Violence escalated overnight in Cairo's Tahrir Square. During the day, journalists from NPR, the Washington Post, New York Times, CNN, al-Jazeera and other news outlets were detained and in some cases roughed up by the pro-government groups. But the new Prime Minister, a recent appointee of Hosni Mubarak, has apologized and promised that forces behind the violence will be held to account. Also, 1200 possible new planets in the Milky Way.