How do we make sense of the universe with the help of astronomical images? My guest for this episode is Luis Calçada, who is a data visualisation artist at the European Southern Observatory, also known as ESO. This organisation builds and runs some of the most powerful telescopes in the world, and it’s Luis job to make sure that the data collected by these telescopes is presented in an visually appealing and educational way to the general public. We discuss how astronomical images are created, what an artistic illustration is and what the role astronomical visualisations play for our understand of the universe.

Luis homepage: https://luiscalcada.com/

WASP-76b: https://luiscalcada.com/exoplanet-where-it-rains-iron

Pluto: https://luiscalcada.com/pluto

ESO image database: https://www.eso.org/public/images/

Music credit: Jean Anguis.

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In 2014 and 2015, protests against the construction of the Thirty Meter Telescope on Maunakea, Hawaii, showed how the choice of where to build a telescope is entangled with social and political issues. In this episode, I talk with Ann C. Thresher from Stanford University about the relationship between astronomy and colonialism, and the ethical dimensions of telescope sitings. Thresher is a leader of the Responsible siting group within the Next Generation Event Horizon Telescope, and is actively involved in reaching out to local communities in the early stages of new telescope projects.

Learn more:

Ann. C. Thresher's homepage

History Philosophy Culture working group of the ng-EHT

Decolonising Science Reading List

Music credit: Jean Anguis.

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The 2017 Nobel Prize in physics was awarded to the discovery by the LIGO observatory of a gravitational wave signal created by two colliding black holes. But what has happened since then? What have the gravitational wave hunters learned about not only black holes, but also neutron stars and even the expansion of the universe? In this episode, associate professor Salvatore Vitale from MIT and the LIGO collaboration will answer these questions, and also describe what we can expect from the future of gravitational wave astronomy.

Salvatore Vitale's homepage.

Music credit: Jean Anguis.

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