Hosted by Lester Nare and Krishna Choudhary, this interview features John Mulchaey, the 12th President of Carnegie Science and former Director of the Carnegie Observatories. The conversation starts with his early work on galaxy groups and dark matter, then expands into how Carnegie works as a scientific institution, what the Giant Magellan Telescope could unlock for exoplanets and astronomy, how science funding actually works, and why eclipse chasing is still one of the most magical experiences in science.
Summary
Galaxy groups and dark matter — Mulchaey explains why small galaxy groups matter more than most people realize, and how X-ray observations of hot gas helped make their masses and dark matter content measurable.
Carnegie’s scientific model — the interview gets into what makes Carnegie unusual: long time horizons, scientific freedom, and the ability to pivot toward new questions without the same constraints most university researchers face.
The Giant Magellan Telescope — Mulchaey breaks down why bigger telescopes matter, why GMT is such a leap beyond current facilities, and why exoplanet atmospheres are one of the biggest prizes ahead.
Science funding and eclipse outreach — the second half moves into federal science funding, philanthropy, how astronomy has changed as a field, and Carnegie’s major eclipse outreach partnership with the Perot Museum.
Show Notes
John Mulchaey leadership bio — Carnegie Science
https://carnegiescience.edu/about/leadership
Carnegie Science appoints John Mulchaey as its 12th President
https://carnegiescience.edu/news/carnegie-science-appoints-john-mulchaey-its-12th-president
Giant Magellan Telescope — official overview
https://giantmagellan.org/about-us/
1993 NASA write-up on Mulchaey’s dark matter result in galaxy groups
https://science.nasa.gov/missions/hubble/dark-matter-found-in-a-typical-cluster-of-galaxies/
Carnegie Science Great North American Eclipse outreach recap
https://carnegiescience.edu/yearbook/2024/science/great-north-american-eclipse
Perot Museum eclipse partnership recap
https://www.perotmuseum.org/events/solar-eclipses/
