Podcast #1 Geraint Lewis: Cosmologist his work, views on science and teaches us some welsh!
TLDRIn this Physics High podcast episode, host Paul interviews Professor Geraint Lewis, an astrophysicist from the University of Sydney, who shares his journey into science and his passion for understanding the universe's evolution. Lewis discusses his research interests, including dark matter and galactic cannibalism, and reflects on the importance of science education and communication. He emphasizes the need to celebrate scientific achievements and inspire the next generation of scientists, regardless of the career paths they may ultimately choose.
Takeaways
- ๐ Professor Geraint Lewis is a renowned astrophysicist, focusing on understanding the universe's overall structure and evolution.
- ๐ He has authored over 400 papers and two books, one on the fine-tuning argument and another about the Big Bang.
- ๐ Geraint's research interests include dark matter, the end of the universe, and galactic cannibalism, which refers to large galaxies consuming smaller ones.
- ๐ His journey into science was inspired by an interest in how the world works, despite coming from a non-scientific background.
- ๐ He found his passion for science during his teenage years, where he developed a love for maths and physics.
- ๐ The academic world's global nature led him to work in various countries, eventually settling in Australia for both professional and personal reasons.
- ๐ก He highlights the importance of science communication and the need to correct the public's misconceptions about scientific illiteracy.
- ๐งฌ The rise of scientific illiteracy could be due to people taking technological advancements for granted and not appreciating the role of science.
- ๐ Encouraging students to pursue science involves addressing issues in the educational system and promoting the value of science careers.
- ๐ He advocates for following one's passion in science, as the skills learned are transferable and can lead to diverse career paths.
- ๐ The discussion emphasizes the need to make science a celebrated field and to encourage a broader understanding of its importance and impact on society.
Q & A
What is Professor Geraint Lewis's main research area?
-Professor Geraint Lewis is a cosmologist, and his main research area is to understand the overall picture of the universe, including its evolution, the forces that drive and shape it, and whether it can be described in terms of the laws of physics.
How has the universe evolved since the Big Bang?
-Since the Big Bang, the universe has evolved from a smooth and featureless state to a richly textured one with numerous galaxies. Galaxies have formed and grown through processes such as galactic cannibalism, where larger galaxies consume smaller ones.
What is galactic cannibalism?
-Galactic cannibalism refers to the process where a larger galaxy grows by consuming smaller galaxies. The Milky Way, for example, is currently consuming the Sagittarius dwarf galaxy and will continue to grow over time by consuming other smaller galaxies.
How did Professor Lewis develop his interest in science and cosmology?
-Professor Lewis developed his interest in science and cosmology through his love for science fiction as a child, reading popular astronomy magazines, and later finding enjoyment in mathematics and physics during his high school years.
What challenges did Professor Lewis face in his academic journey?
-Professor Lewis faced challenges such as coming from a non-scientific background with no role models in science, and having to move to different countries for academic and career opportunities, including the United States, Canada, and Australia.
What factors do you think contribute to the rise of scientific illiteracy?
-The rise of scientific illiteracy could be attributed to people taking scientific advancements for granted, a lack of emphasis on the importance of science in society, and the way science is presented in the media, often relegating it to less important news stories.
What is the significance of the Welsh language to Professor Lewis?
-The Welsh language is significant to Professor Lewis because he comes from a Welsh background, but he regrets not being able to speak the language fluently due to the lack of encouragement during his childhood.
How does Professor Lewis feel about the importance of science in society?
-Professor Lewis believes that science should be celebrated and valued in society, and that it is important for parents to consider science as a viable career path for their children. He also emphasizes the need for better science education and communication.
What advice would Professor Lewis give to high school students considering a career in science?
-Professor Lewis advises students to pursue a degree in the area of science they are interested in and not to worry about how it might limit their career opportunities. He emphasizes that the skills learned in science are transferable and can be applied to various fields.
How does the language barrier affect scientific collaboration?
-Language barriers can create walls between scientific communities, making it difficult to share research and collaborate effectively. As science continues to grow globally, it may become necessary to consider the role of different languages in scientific communication.
What is Professor Lewis's perspective on the future of scientific research?
-Professor Lewis sees potential for significant growth in scientific research in countries like India, China, and Africa. He emphasizes the importance of recognizing and overcoming language barriers to ensure effective collaboration and exchange of ideas among scientists worldwide.
Outlines
๐ Introduction and Astrophysics Discussion
The podcast begins with an introduction to the Physics High Podcast, followed by a brief quiz. The main guest, Professor Geraint Lewis, is introduced as an astrophysicist at the University of Sydney, known for his extensive research and publications in the field. The host expresses admiration for Professor Lewis's ability to engage the public's interest in astronomy and astrophysics. They delve into a discussion about the big picture of the universe, exploring its origins, evolution, and future. Specific topics such as dark matter, the end of the universe, and galactic cannibalism are highlighted as areas of interest for Professor Lewis.
๐ Journey into Science and Personal Background
Professor Lewis shares his personal journey into the field of science, emphasizing the lack of a defining moment that led him to this career path. He talks about his non-scientific background, growing up in coal mining country in South Wales, UK. Despite the absence of scientific role models, his interest in science fiction and a series of educational books sparked his curiosity about the world. His passion for science was further ignited during his teenage years when he found himself enjoying math and physics, leading him to pursue a degree in physics with astronomy at the university.
๐ Global Academic Life and Move to Australia
The conversation continues with Professor Lewis discussing the global nature of academic life, which often involves moving to different countries for job opportunities. He shares his experiences studying and working in various locations, including London, Cambridge, the US, and Canada, before eventually moving to Australia due to job opportunities at the Anglo-Australian Observatory and his Australian wife. He reflects on the beauty of the locations associated with his work and the joys of raising a family in Australia.
๐งฌ Public Perception of Science and Challenges
The discussion shifts to the challenges faced by the scientific community, particularly in the context of public perception. Professor Lewis expresses concern over the rise of scientific illiteracy and the negative attitudes towards science. He suggests that part of the problem lies in people taking scientific advancements for granted, leading to a lack of appreciation for the field. He also points out the media's role in perpetuating this issue, often relegating science to less important news stories. The conversation touches on the need for a change in societal attitudes towards science and the importance of celebrating scientific achievements.
๐ Solutions to Enhance Scientific Literacy
In response to the challenges mentioned, Professor Lewis discusses potential solutions to improve scientific literacy. He emphasizes the need for a multifaceted approach, involving government, education, and media. The importance of having scientists in schools to teach and inspire students is highlighted, as well as the need for science communicators to effectively convey the significance of scientific research. The conversation also touches on the role of parents and the primary and high school education system in fostering an interest in science from a young age.
๐ Advice for Students Considering a Career in Science
Professor Lewis offers advice to students considering a career in science. He encourages students to pursue their interests and not be afraid of the perceived limitations of choosing a science major. He shares anecdotes of individuals who have successfully transitioned from science to other fields, emphasizing the transferable skills gained from studying science. He advises students to follow their passion and not be swayed by external pressures or prejudices. The importance of choosing a path early in life and acquiring valuable skills is stressed, along with the idea that these skills can lead to various career opportunities in the future.
๐ The Welsh Language and Its Importance
In the final paragraph, Professor Lewis shifts the focus to the importance of language diversity and his personal connection to the Welsh language. He expresses regret over not being able to speak Welsh, despite his father's fluency. He discusses the unique aspects of the Welsh language and its pronunciation, which differs from English. The conversation highlights the resurgence of the Welsh language in schools and its current status as the language of the Welsh Parliament. The discussion ends with a reflection on the broader implications of language barriers in the global scientific community and the potential need for a more inclusive approach to scientific communication.
Mindmap
Keywords
๐กAstrophysics
๐กCosmology
๐กDark Matter
๐กGalactic Cannibalism
๐กBig Bang
๐กScientific Literacy
๐กScience Communication
๐กEducation
๐กCareer in Science
๐กWelsh Language
๐กGlobalization of Science
Highlights
Professor Geraint Lewis discusses his journey as a cosmologist and his research into the evolution of the universe.
Lewis explains his interest in dark matter and the forces that shape the universe.
The concept of galactic cannibalism is introduced, describing how galaxies like the Milky Way grow by consuming smaller ones.
Lewis shares his personal story of becoming passionate about science and cosmology, despite coming from a non-scientific background.
The importance of science communication is emphasized, as Lewis discusses his experiences with public engagement and astronomy nights.
Lewis talks about the challenges of scientific illiteracy and the rise of anti-vaxxers and flat earthers, highlighting the need for better science education.
The role of science in society and the need to celebrate scientific achievements rather than just focusing on problems is discussed.
Lewis suggests that science should be a career that parents encourage their children to pursue, contrary to common perceptions.
The impact of government funding on scientific research and education is examined, with a call for more investment in these areas.
Lewis encourages students to follow their passion for science and not be afraid of where it may lead them in their careers.
The importance of teaching science in schools is emphasized, with a call for better training and support for science teachers.
Lewis discusses the resurgence of the Welsh language and his personal regret at not being able to speak it.
The potential need for scientific research and communication in languages other than English is explored.
Lewis shares his thoughts on the importance of science in the global context, particularly in relation to rising scientific powers like China and India.
The conversation concludes with Lewis expressing his openness to answering more questions from the audience on science, physics, and the universe.
Transcripts
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