Fri, 8 February 2013
Episode 23: Studying the Universe's Large Scale Structure from the South Pole, with Keith Vanderlinde
Keith Vanderlinde joins Justin Trottier at The Star Spot to share his Antarctica experience, studying the Cosmic Microwave Background radiation from the South Pole Telescope. He explains the ambiance, challenges and thrills of working in cold and darkness for nearly a year. The two then discuss how the origin and evolution of large scale structure in the universe can be read from imprints left on the first light released into space, and what we can learn about dark matter and dark energy from characterizing the universe’s earliest galaxy clusters.
Keith Vanderlinde is Global Scholar with the Canadian Institue for Advanced research and Assistant Professor in the University of Toronto's Department of Astronomy and Astrophysics and Dunlap Institute for Astronomy and Astrophysics. Vanderlinde previously worked as a Research Assistant at the Kavli Institute for Cosmological Physics in Chicago. He participated in crafting a number of science exhibits at Chicago’s Adler Planetarium and Museum of Science and Industry. More recently he was stationed for nearly a year in Antarctica working with the South Pole Telescope to study data from the universe's youngest days taken at one of the coldest locations on earth.
In Current in Space, we look at some notorious recent international examples of space adventures - or sometimes misandventures.
Fri, 25 January 2013
Professor Sabine Stanley joins Justin Trottier at The Star Spot to discuss everything to do with magnetic fields: how they're created, where they can be found, and what they tell us about the composition and behaviour of planets. Why does Mercury have a magnetic field when we originally predicted it shouldn't? Why does Saturn's magnetic field line up so perfectly with its geographic poles? What makes the magnetic field of Mars so different in its northern and southern hemispheres?
The two then focus on Earth's magnetic field which is known to flip north and south poles throughout its history. Why do flips happen? Why do they occur at seemingly irregular intervals? Are they dangerous to life? Dr. Stanley shares her excitement for how using mangetic fields as another tool in searching for habitable exoplanets. Finally the two discuss upcoming missions to study the magnetic fields of objects in our solar system, such as the Jupiter Icy Moons Explorer (JUICE) which will use mgnetic field information to tell us more about the oceans under Europa's ice sheets.
Sabine Stanley is Associate Professor in the Department of Physics at the University of Toronto, having received a PhD in geophysics from Harvard University. She has been awarded a Canada Research Chair in Planetary Physics, a Sloan Research Fellowship, and the Early Researcher Award from the Ministry of Research and Innovation of the Province of Ontario.
Fri, 11 January 2013
Dr. Stuart Clark joins Justin Trottier at The Star Spot to share his unique work dramatizing the great stories of science. Clark combines his background in astrophysical research with his career in science journalism and writing to author a trilogy of novels that focus on the lives of the great minds of astronomy, from the Trials of Galileo to the personality conflicts between Isaac Newton and Robert Hooke, to the discovery of the Big Bang by Einstein, Lemaitre and others. Clark also discusses his blog for The Guardian called Across the Universe, and shares his insights into teaching critical thinking and how to use the history of discovery to deepen the public appreciation and understanding of science. Dr. Stuart Clark.
Stuart Clark, PhD in astrophysics, is fellow of the Royal Astronomical Society, former Director of Public Astronomy Education at the University of Hertfordshire and a writer for New Scientist, The Guardian and BBC Science programmes. He is the author of over a dozen books, including a trilogy of novels that dramatize pivotal periods in the development of our understanding of the universe, incorporating as characters in the plot the scientists at the centre of discovery. These books include The Sky’s Dark Labrynth about Galileo and Kepler, The Sensorium of God focused on Isaac Newton and his contemporaries, and the forthcoming The Day Without Yesterday on Albert Einstead and George Lemaitre.