Tag Archives: Physics

Podcast #32: Dr Nicole Gugliucci

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Welcome to the 32nd episode of the Urban Astronomer Podcast. This episode features an interview with Dr Nicole Gugliucci, whom long time listeners of astronomy podcasts should recognise from her work with Cosmoquest, and her many appearances on various shows in the 365 Days of Astronomy Podcast. This is quite a long-running interview, so we didn’t have time to include the next segment of our supernova story. We’ll pick that up next week instead, with the thrilling tale of what … Continue reading →

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Podcast #31: Clem Unger talks about OSIRIS-REx

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Welcome to the 31st episode of the Urban Astronomer Podcast. This episode features an interview with Clem Unger, an ambassador for the OSIRIS-REx mission who lives in Australia. This is followed by the next part of our series on the evolution of stars, taking us one step closer on our journey to seeing where supernovae come from. Clem Unger A few weeks back, I spoke to Clem Unger, who lives in Australia and serves in his spare time in the … Continue reading →

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Podcast #30: Stellar Evolution and Nuclear Fusion

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Welcome to episode 30 of the Urban Astronomer Podcast. This week’s episode features the 2nd part of our look at how stellar evolution can lead to a supernova explosion, inspired by listener requests to present more serious science and physics explainers. Last time we looked at the formation of a stellar nursery, so today we look inside that nursery at the birth of a new star. For fans of the interviews with people who have some connection to astronomy in South … Continue reading →

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Podcast #29: Stellar evolution – from gas to star

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Welcome to episode 29 of the Urban Astronomer podcast.  As you know by now, we mainly feature interviews with people connected to South African astronomy. But since we had no guests lined up for this episode, we decided it was time to keep a promise we’d made a month ago to listener Andrew Botteril, from KwaZulu-Natal province in South Africa. Andrew is a fan of the show and had asked that we feature a little more basic science, explaining some … Continue reading →

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What is the temperature of Space?

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Dear Urban Astronomer So, my good friend and I were talking about the temperature in space. He thinks it must be hot in space, since there is no atmosphere to absorb sunlight. I disagreed. I think that the fact that there is no air in space, means there is nothing to heat up. That’s how temperature on earth works. So, surely it must be cold in space. Can you shed light (excuse the pun) on this debate? Can you answer … Continue reading →