The Astroholic Explains - Page 2

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Measuring the length of a day on Earth is relatively easy thanks to the Sun and stars. But it isn’t as easy on some of the other planets, and astronomers had to get pretty clever to actually achieve those measurements.

In We got to play with a Unistellar telescope and even collect data about an exoplanet, to learn we talked with Unistellar Chief Scientific Officer Dr Franck Marchis.

In the zone of avoidance, far from us, something is pulling the Milky Way and so many other galaxies. It is time to meet The Great Attractor, a fascinating gravitational object.

In this episode, we turn back time to the moment known as cosmic dawn ready to understand the first stars and how they changed the Universe. A guiding light in this journey is Dr Emma Chapman, author of the book First Light. Listen on Apple Podcast or on your favourite podcast player through Anchor. Main image Credit: JWST image of […]

On Earth, quakes are caused by the motion of the tectonic plates. Quakes also happen on the Moon and Mars without them, and Chris is curious to find out how they occur as well as to listen to one of these outer-world quakes.  Listen on Apple Podcast or on your favourite podcast player through Anchor. Main image Credit: An […]

In this episode, Chris is curious about a particular technique that allows building virtual radio telescopes the size of our planet, like the Event Horizon Telescope. So we invited an expert to tell us about radio interferometry and the Square Kilometer Array, the project that will push radio astronomy to new heights. Listen on Apple Podcast or on […]

There is something wrong with our model of the Universe. New data suggests that our assumptions about the cosmos are not all correct. Join us as we unravel the tension in the expansion rate of the Universe. Listen on Apple Podcast or on your favourite podcast player through Anchor. Main image Credit: NASA, ESA, CSA, STScI 00:00:00 Chris               Hello, […]

Pulsars are the focus of this episode and we speak to radio astronomer Rami Mandow over in Australia to discuss how precise measurements of these fascinating objects have been used as a galaxy-spanning gravitational wave observatory. Listen on Apple Podcast or on your favourite podcast player through Anchor. Main image Credit: Tonia Klein / NANOGrav – Creative Commons Attribution 4.0 International […]

Chris’ gym workout on a machine he erroneously called “the booty blaster” inspired this episode where we discuss if it’s possible to create something that will last as long as the universe. And that led us to a question for you, dear listener. Listen on Apple Podcast or on your favourite podcast player through Anchor. 00:00:00 Chris               Holy crap, […]

Our Christmas Special this year is a peculiar tale of the intimate corners we might create as we leave Earth behind to live in space. It was written by Dr Russel Moul, as his first time penning a radio tale, with the excellent voice of The Astroholic Explains’ team and the ever wonderful Katy Evans. […]

We are at the final factual episode of season 3, so we went back to our very popular quickfire round format from season 2 and have once again crowdsourced many questions about the universe. Tune in to discover what happens if you try to hold a black hole, what’s the biggest object in the universe.

Looking for life outside of our planet is far from easy, but researchers have many different tools they are using. We sat with Dr Mario Toubes-Rodrigo to discuss biosignatures and how we might eventually discovIn this live recording of the podcast, hosted by the Central London Humanists, Alfredo and Chris tackle the surprising, the head-scratching, […]