The Professor Walter Stibbs Lectureship commemorates the achievements of Professor Stibbs through an annual lecture by a distinguished astronomer of international standing.



May 2nd –  The Last Stargazers: True Stories and Adventures of Astronomy
About the speaker

Emily Levesque is an astronomy professor at the University of Washington. Her research focuses on how the most massive stars in the universe evolve and die and how technology is changing the stories we tell about science and the cosmos. She is currently a 2022-2023 Fulbright U.S. Scholar and a 2022 Guggenheim Fellow.

Levesque was awarded the American Astronomical Society’s 2014 Annie Jump Cannon Award, the 2020 Newton Lacy Pierce Prize for outstanding achievement in astronomical research, and the 2023 Chambliss Astronomical Writing Award. She is also a 2015 Scialog Fellow, a 2017 Alfred P. Sloan Research Fellow in Physics, a 2018 Kavli Frontiers of Science Fellow, a 2019 Cottrell Scholar, and a recipient of the Gold Medal of Honorary Patronage from Trinity University’s Philosophical Society. Her critically-acclaimed popular science book, The Last Stargazers, shares the tales of life as a professional scientist and explores the crucial role of human curiosity in a rapidly-changing field.

She received her PhD in astronomy from the University of Hawaii and her bachelors degree in physics from MIT.


Have you ever gazed at the night sky and pondered its mysteries? Have you wondered if the universe has an end, what’s inside a black hole, or if aliens are peering back at us from a nearby planet? Would you brave blizzards, gunfire, earthquakes, and explosions to find out? Astronomers adventure across the world’s highest mountains and to the literal ends of the Earth in the hopes of answering some of humanity’s oldest questions: “Who are we?” “Where did we come from?” “Are we alone?” Along the way, they grapple with everything from erupting volcanoes to marauding squirrels, facing a rapidly-changing night sky and a technological renaissance that’s changing the very nature of how we study the stars. From a breathtaking flight through the Antarctic stratosphere to tall tales of wild bears loose in the observatory, this evening of storytelling and science will take you on a sweeping behindthe-scenes tour of today’s most exciting astronomical discoveries, introduce you to the people who make them, and explore the evolving world of professional stargazing.

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July 29th, 2021 – A Cosmic Perspective: Searching for Aliens, Finding Ourselves by Jill Tarter
About the speaker

Jill Tarter is the Emeritus Chair for SETI Research at the SETI Institute in Mountain View, California and serves as a member of the Board of Trustees for that institution.

Tarter received her Bachelor of Engineering Physics Degree with Distinction from Cornell University and her Master’s Degree and a Ph.D. in Astronomy from the University of California, Berkeley.

She has spent the majority of her professional career attempting to answer the old human question “Are we alone?” by searching for evidence of technological civilizations beyond Earth.

She served as Project Scientist for NASA’s SETI program, the High Resolution Microwave Survey and has conducted numerous observational programs at radio observatories worldwide. She is a Fellow of the AAAS, the California Academy of Sciences, and the Explorers Club, she was named one of the Time 100 Most Influential People in the World in 2004, and one of the Time 25 in Space in 2012, received a TED prize in 2009, two public service awards from NASA, multiple awards for communicating science to the public, and has been honoured as a woman in technology. She was the 2014 Jansky Lecturer, and received a Genius Award from Liberty Science Center in 2015. She served as President of the California Academy of Sciences 2015-16. Asteroid 74824 Tarter (1999 TJ16) has been named in her honour. In 2018 she was recognized with the Maria Mitchell Women in Science Award and the Sir Arthur Clarke Innovator’s Award, and in 2021 she was elected to the American Academy of Arts and Sciences.

Since the termination of funding for NASA’s SETI program in 1993, she has served in a leadership role to design and build the Allen Telescope Array and to secure private funding to continue the exploratory science of SETI. Many people are now familiar with her work as portrayed by Jodie Foster in the movie Contact. Her biography Making Contact was written by Sarah Scoles and published in 2017

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July 16th, 2019-Pulsars and the universe by Jocelyn Bell Burnell

About the Speaker

Dame Jocelyn Bell Burnell, a visiting professor of astrophysics at Oxford University.

Her greatest discovery happened in 1967 when she was a postgraduate student at Cambridge University. Using a radio telescope she had helped to build, Jocelyn became the first person to discover pulsars — rotating neutron stars that appear to ‘pulse’ since the beam of light they emit can only be seen when it faces the Earth. The discovery led to a Nobel Prize for her PhD supervisor, Antony Hewish, and is considered one of the greatest discoveries of the 20th century. Since then Jocelyn has gone on to accomplish a number of other remarkable milestones.

She became the first female president of both the Institute of Physics and the Royal Society of Edinburgh and helped set up the Athena Swan program to advance female participation in science. Last year her work was honoured with one of the world’s most prestigious physics prizes – the $A4.3 million Special Breakthrough Prize in Fundamental Physics. She joined a very select group of physicists to receive the prize, including Stephen Hawking.

She was appointed to Dame Commander of the British Empire (CBE) for services to astronomy in 1999, followed by a Dame Commander Order of the British Empire (DBE) in 2007.

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June 5th, 2018- The State of the Universe by Brian Schmidt (Australian National University)
About the Speaker

Brian Schmidt is Distinguished Professor of Astronomy and the 12th Vice-Chancellor and President of the Australian National University, having joined the University in 1995. Brian was raised in Montana and Alaska, USA, and received undergraduate degrees in Physics and Astronomy from the University of Arizona in 1989. Under the supervision of Robert Kirshner, he completed his Astronomy Master’s degree (1992) and PhD (1993) from Harvard University. In 1994 he and Nick Suntzeff formed the HighZ SN Search team, a group of 20 astronomers on 5 continents who used distant exploding stars to trace the expansion of the Universe back in time. This group’s discovery of an accelerating Universe was named Science Magazine’s Breakthrough of the Year for 1998. For his work on the accelerating universe, Brian Schmidt was awarded the 2011 Nobel Prize in Physics, jointly with Adam Riess and Saul Perlmutter. He is a Fellow of the Australian Academy of Science, The United States Academy of Science, and Royal Society, In 2013, he was made a Companion of the Order of Australia. Brian also runs Maipenrai Vineyard and Winery, a 2.7 acre vineyard and a small winery in the Canberra District which produces Pinot Noir.

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April 11th, 2017 -LIGO, Gravitational Waves, and the Final Ballet of a Pair of Black Holes: The Birth of a New Kind of Astronomy by David Reitze (LIGO Laboratory) 

About the Speaker

David Reitze is the Executive Director of the LIGO Laboratory at the Caltech and Professor of Physics at the University of Florid. He is a member of the LIGO Scientific Collaboration that was awarded the 2016 Special Breakthrough Prize in Fundamental Physics and the 2016 Gruber Foundation Cosmology Prize.

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April 28th, 2016-A planet for Goldilocks by Dr Natalie Batalha (NASA Ames Research Center and the Mission Scientist for NASA’s Kepler Mission)

About the Speaker

Dr Natalie Batalhais an astrophysicist at NASA Ames Research Center and the Mission Scientist for NASA’s Kepler Mission. After studying stellar spectroscopy of young, sun-like stars, Dr Batalha has been involved with the Kepler Mission.
In 2011 Dr Batalha was awarded a NASA Public Service Medal for her vision in communicating Kepler science to the public and for outstanding leadership in coordinating the Kepler Science Team. In 2015, Natalie joined the leadership of a new NASA initiative, dedicated to the search for evidence of life beyond the Solar System. NASA’s Nexus for Exoplanet System Science (NExSS) brings teams from multiple disciplines together to understand the diversity of worlds.

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April 1st, 2015- THE MONSTER AT THE HEART OF OUR GALAXY by Professor Andrea Ghez (UCLA)


About the speaker

Andrea M. Ghez is Professor of Physics & Astronomy and Lauren B. Leichtman & Arthur E. Levine chair in Astrophysics, is one of the world’s leading experts in observational astrophysics and heads UCLA’s Galactic Center Group. Her ground-breaking work on the center of our Galaxy has led to the best evidence for the existence of supermassive black holes. As recognition of her work, Prof. Ghez has received numerous honour and awards, including the Crafoord Price in Astronomy (first woman to receive this price in any field).

More information can be found on Prof. Ghez’s website


May 15th, 2014- CRACKING THE EINSTEIN CODE by Professor Fulvio Melia (University of Arizona)
About the Speaker

Fulvio Melia is Professor of Physics, Astronomy, and Applied Mathematics at the University of Arizona, in Tucson, and John Woodruff Simpson Fellow, a chair formerly held by the Nobel laureate Niels Bohr and noted American Poet Robert Frost. Born in Gorizia, Italy, he was raised in Melbourne and received his BSc and MSc degrees from Melbourne University. He completed his graduate studies at the Massachusetts Institute of Technology, receiving a PhD for research on the physics of strong gravitational and magnetic fields.

Since then, he has been a Presidential Young Investigator, an Alfred P. Sloan Research Fellow, and has been an editor for the Astrophysical Journal and the Astrophysical Journal Letters. He is currently the chief editor for the University of Chicago Theoretical Astrophysics Books Series. He has been a visiting professor at numerous universities in Australia, Asia, and Europe, and has published over 250 journal articles in high-energy astrophysics, including topics on black holes, relativistic matter, and cosmology. He is also the author of six books, most recently Cracking the Einstein Code, the story of how New Zealander Roy Kerr and his colleagues finally managed to find one of the most famous and important solutions to Einstein’s equations of general relativity.