Wobbling stars and distant worlds – in this episode of Expedition Sound, we leave the planets of our Solar System behind and venture out into our home galaxy to explore the stars and exoplanets in the Milky Way galaxy. Through the sonification of so-called starquakes observed by the European Space Agency’s Gaia space telescope, we explore what we can learn from listening to the heartbeat of stars and how astronomers uncover clues about their age, structure and life story.

We hear from Sarah Kane, a PhD student at the University of Cambridge, who studies stars using data from ESA's Gaia mission. Sarah shares how starquakes can help astronomers learn about the ages of stars and reflects on her experiences doing astronomical research as a scientist with a visual impairment.

We also meet Maximilian Günther, Project Scientist for ESA's upcoming Plato mission, to explore what we can learn from studying exoplanets and how missions such as Gaia and Plato are helping us piece together the story of worlds so far from our own.

Hosted by Zsófi Szalavári

Check out the sonification by Joey Mombarg here: https://www.esa.int/ESA_Multimedia/Videos/2022/06/Gaia_sees_starquakes

Learn more about ESA’s Gaia mission: esa.int/Gaia

Learn more about ESA’s Plato mission: esa.int/Plato

Original theme music produced by Marci Szalavári (https://soundcloud.com/septrone-hd).

Expedition Sound is a podcast series by the European Space Agency (ESA) in which you’re invited to explore the Universe through your ears. Guided by sonifications – the translation of data into sound – we travel from our Sun out into the depths of space to uncover what the space telescopes of ESA’s science missions teach us about the Universe.

We get as close as possible to travelling aboard a spacecraft, experiencing what it would be like to fly towards planet Mercury. Through a sonification of data collected during ESA/JAXA BepiColombo’s sixth flyby, we can almost feel the spacecraft shaking and the rocky planet’s gravity tugging on it.

In this episode of Expedition Sound, we explore the planets of our Solar System and make a stop at planet Mercury. Blasted by the Sun's intense heat and shaped by a magnetic field unlike any other rocky planet’s, this small world is a place that still holds many mysteries.

We hear from BepiColombo Project Scientist Geraint Jones about which of Mercury's mysteries the mission will help scientists unravel, and about what hearing the spacecraft approach the planet is like for someone so involved in the mission. In this episode, we also talk with Ben Ruggles, who was an undergraduate student at the University of Portsmouth, UK, at the time of recording. Ben explains how he uses sonification in his astronomy research as a scientist with a visual impairment, and discusses the challenges of collaborating with others while doing science through sound.

Hosted by Zsófi Szalavári

Check out the sonification by Carmelo Magnafico (IAPS/INAF) here: https://www.esa.int/ESA_Multimedia/Videos/2025/01/The_sounds_of_BepiColombo_s_sixth_flight_past_Mercury

Learn more about the ESA/JAXA BepiColombo mission: esa.int/BepiColombo

Find out more about STRAUSS, the sonification tool that Ben is using for his research: https://www.audiouniverse.org/our-research-and-code/strauss-code

Original theme music produced by Marci Szalavári (https://soundcloud.com/septrone-hd).

Guided by a sonification created with data from the ESA-led Solar Orbiter mission, we explore some of the mysteries of our Sun, how Solar Orbiter is studying them, and how sound can make astronomy more accessible.

In this episode of Expedition Sound, we set off on our first journey of this podcast series and travel to the Sun – our familiar, friendly neighbourhood star.

Along the way, we meet one of Solar Orbiter’s project scientists Miho Janvier, who helps us uncover the science behind solar flares, the solar cycle, and the mysteries that scientists are still trying to solve about the Sun. We also hear from Nic Bonne, a blind astronomer and science communicator at the University of Portsmouth, about how sonification can open new doors to astronomy and create richer ways for everyone to experience the Universe.

Hosted by Zsófi Szalavári

Check out the sonification of this episode here: esa.int/ESA_Multimedia/Videos/2024/12/See_and_hear_three_years_of_solar_fireworks

Learn more about ESA’s Solar Orbiter mission: esa.int/SolarOrbiter

Learn more about ESA’s Smile mission: esa.int/Smile

Find out more about Nic Bonne’s Tactile Universe project: tactileuniverse.org/

Many thanks to Klaus Nielsen (DTU Space / Maple Pools) for making the sonification in this episode. If you would like to hear more sonifications and music by this artist, please visit: linktr.ee/maplepools 

Original theme music produced by Marci Szalavári (soundcloud.com/septrone-hd).

Expedition Sound is a podcast series by the European Space Agency (ESA) in which you’re invited to explore the Universe through your ears. Guided by sonifications – the translation of data into sound – we travel from our Sun out into the depths of space to uncover what the space telescopes of ESA’s science missions teach us about the Universe.

We talk to Julia Schwartz, expert in flight dynamics, and Klaus Merz, space debris, about Solar Orbiter's upcoming risky Earth flyby. On 27 Nov, it will pass almost as close as the International Space Station in one of the closest flybys on record, which will see the spacecraft pass through two regions of hazardous debris. Could Solar Orbiter swerve from collision, if needed? Has the recent 'fragmentation event' increased the risk?

A year ago today, a failure on the Integral spacecraft meant it fired its thrusters for likely the last time. Hear Richard Southworth, Operations Manager for the mission explain how in the 365 days since, the spacecraft in Earth orbit has continued to shed light on the violent gamma ray Universe.

Not only that, Integral should soon be working even more efficiently than before, as mission control teams implement an ingenious new way to control the 18-year-old spacecraft.

ESA needs you. We need a name for our new spacecraft. Its mission? To spot potentially hazardous solar storms before they reach Earth.

We speak to Jussi Luntama, ESA's Head of Space Weather about the mission, why it needs a new name, and what kind of submissions he's hoping for.

Submit your proposal at: https://www.esa.int/Safety_Security/Space_weather/Name_ESA_s_new_mission

Once every two years, asteroid experts around the globe meet up and pretend an asteroid impact is imminent. Why? To prepare for the likely – but plausible – scenario in which this comes true.

In this episode, we speak about the hypothetical impact scenario playing out at this year's Planetary Defense Conference and why it matters, with Detlef Koschny, ESA's Head of Planetary Defence.

Get the full story on hypothetical asteroid 2021 PDC on the Rocket Science blog: https://blogs.esa.int/rocketscience/2021/04/26/deep-fake-impact/

André Kuipers is one of a handful of astronauts who has had to 'shelter-in-place' from a piece of marauding space debris.

In 2012, a debris fragment was spotted heading towards the International Space Station. Its orbit was hard to predict but it looked like it could pass at a distance of approximately 10 kilometres: that meant code red.

ESA astronaut André, along with his fellow passengers, had to seek shelter in the two Soyuz spaceships which function as safe houses and as lifeboats. Fortunately, the debris passed safely by. We spoke to André about what this experience was like, and also to his wife Helen who recounts the exact moment she found out.

In the final episode of the ESA-UNOOSA podcast on space debris, Josef Aschbacher, Director General of the European Space Agency, and Simonetta di Pippo, Director of the UN Office for Outer Space Affairs, discuss this topic of global concern.

What are the two leading organisations doing to tackle space debris? What more needs to be done? Is there reason to be hopeful?

Space may seem vast, but the orbits around Earth in which satellites reside are a limited natural resource. Since the beginning of the space age, millions of debris fragments have been created which now threaten any spacecraft that crosses their path.

So what can we do to protect these vulnerable regions for future generations? Find out in episode nine of the ESA-UNOOSA space debris series, with Stijn Lemmens and Tanya Keusen.

While you listen, check out the corresponding ESA-UN infographic that illustrates this topic: www.esa.int/ESA_Multimedia/Imag…ainability_of_space