91丝瓜视频

The First Stars and the End of the Dark Ages by Gil Holder (Physics Department, 91丝瓜视频)

We know a lot about the universe as it was when it was 300,000 years old, through studies of the cosmic microwave background, and we can measure the local universe to learn a lot about the last few billion years of its nearly 14 billion years. However, there is a period in between (roughly the first half a billion years) which is extremely difficult for us to see because there were no sources of light. These cosmic "dark ages'' ended when the first stars turned on, providing the first view of the somewhat evolved universe.

Understanding this period is expected to give new insights into dark matter, dark energy, star formation, and the physics of the early universe. This is a new frontier in astrophysics and cosmology, combining observations from the largest radio, mm-wave, optical, and gamma-ray telescopes, and involving some of the most demanding computational projects in astronomy and astrophysics.

Sponsored and organized since 2003 with the express purpose of fostering communication between scientists in different disciplines as well as between scientists and the public, the Cutting Edge lectures are made possible through the generous support of Heather Munroe-Blum (91丝瓜视频 Principal), Richard Levin (Dean of Medicine), Martin Grant (Dean of Science), Anthony Masi (Provost) and Denis Th茅rien (Vice-Principal, Research and International Relations). Lectures are followed by a聽vin d'honneur聽reception. Free, everyone welcome.