The Star Spot

International Astronomy Day 2014 occurred on Saturday, May 10. The Star Spot celebrated at the David Dunlap Observatory in Richmond Hill, Ontario, which boasts the largest telescope in Canada. The Dunlap Observatory was once the second largest telescope in the world, second only to the Hooker Telescope at the Mount Wilson Observatory, famously used by Edwin Hubble to discover the expanding Universe. The Dunlap is now used purely for educational and outreach purposes and is maintained by the Royal Astronomical Society of Canada, Toronto Centre, one of The Star Spot's affiliated organizations.   

On this episode of The Star Spot we bring you highlights from our event, Stump the Astronomer, held as part of International Astronomy Day 2014 at the Dunlap Observatory.

How big is space?  Is string theory the end of physics? Will an elevator ever take us into space? what happens if a regular matter black hole comes into contact with an anti-matter black hole? And most critical of all, was our astronomer stumped?

Current in Space

Ben introduces us to the sun's potential first known sibling, a star that is now thought to have formed in the same nursery, or nebulae, as our own. Then Anuj explores the search for hidden ancient impact craters on Earth and what they tell us about the history of our planet - and the evolution of life. And back to Ben for continued breaking news coming from the study of gravitational distortions of the early universe.

About our Guest

We were very fortunate to put on the spot at the star spot our resident amateur astronomer Ed Hitchcock, also known as SciTeacherEd on twitter. Ed Hitchcock is an evolutionary biologist, high school science teacher and volunteer telescope operator at the Dunlap Observatory. He blogs about science education at teachscience.net and amateur astronomy at BudgetAstronomer.ca. He describes himself as a life long science geek

Direct download: TheStarSpot_Ep53_StumpTheAstronomer.mp3
Category:general -- posted at: 9:00pm EDT

Feature Guest: Norman Sleep

Have you ever wondered what the massive internal hot core of the Earth has to do with space? Enter the world of neutrino geophysics. It might sound technical, but in probing the nature of the mysterious centre of the earth scientists are getting closer to determining the habitability of other planets in space. Co-host Denise Fong opens the program as Professor Norman Sleep joins Justin Trottier at The Star Spot.

Current in Space

Dave reports on the next stepping stone in our search for Earth's twin, the discovery of the first habitable Earth-sized planet within the habitable zone of its star. Anuj asks if the Martian atmosphere was ever a biosphere, citing studies of the chemical composition of Martian rocks found on Earth that are telling us about changes in the Martian atmosphere over time. And finally The Star Spot's poet-in-residence Benjamin shares a paean to recent geological work that contributes to our understanding of the Red Planet.

About Our Guests

Norman H. Sleep is a professor of geophysics at Stanford University. He has collaborated with NASA on topics related to life on the ancient Earth and on other planets. Dr. Sleep studies how the insides of planets work and he was a member of a committee to advise NASA on planetary habitability. He has made ​​major contributions to problems of plate tectonics and many other areas of geology and planetary sciences. Sleep has won numerous awards and hounours around the world, including the 2008 Wollaston Medal of the Geological Society of London. He is also the author, with Kazuya Fujita, of the book, Principles of Geophysics.

Direct download: TheStarSpot-Ep52-NormalSleep.mp3
Category:general -- posted at: 9:00pm EDT

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