Cosmic dust particles reveal insights into solar system formation and material exchange.
Study of cosmic dust may shed light on the potential extraterrestrial origins of life on Earth.
Deep dives
Cosmic Dust and Its Origins
Exploring cosmic dust, the podcast episode delves into the origins and significance of cosmic dust, particles originating from space, namely comets or asteroids. The discussion highlights the importance of cosmic dust in understanding the origin and evolution of the solar system, planets, and potentially life. Scientists have found cosmic dust particles on rooftops, indicating its widespread presence and role in planetary formation.
Detection and Study of Cosmic Dust
The podcast covers the detection and analysis of cosmic dust particles, emphasizing the techniques used to differentiate cosmic dust from terrestrial dust. Scientists study isotopic compositions to identify cosmic dust, which offers insights into the material exchange within and between solar systems. The discussion also references Stardust mission, revealing surprising findings of minerals closer to the sun than expected.
Implications for Solar System Evolution
The episode addresses the implications of cosmic dust in understanding the evolution of the solar system. By analyzing cosmic dust samples, scientists glean insights into the diversity of materials in the solar system, the formation of planets, and the exchange of materials between different solar systems. Cosmic dust samples have revealed particles dating back billions of years, providing valuable information about the universe's history.
Life's Origins and Exotic Possibilities
The podcast touches on the role of cosmic dust in potentially seeding life on Earth by delivering essential building blocks like water and organic molecules. The discussion explores the idea of life's origins from extraterrestrial sources, delving into how cosmic dust may have influenced the formation of life. Speculation on the implications of discovering cosmic dust grains from outside our solar system adds a layer of intrigue to the conversation.
Brian Cox and Robin Ince find out about dust that is raining down on Earth from space. They are joined by planetary scientists Matthew Genge and Penny Wozniakiewicz and comedian Alan Davies. They learn how billions of tiny micrometeorites land on the surface of the Earth every year, hidden amongst pollution particles and household dust. Where does cosmic dust come from and what can it tell us about the birth of the solar system?
New episodes are released on Saturdays. If you're in the UK, listen to the full series first on BBC Sounds: bbc.in/3K3JzyF
Producer: Caroline Steel
Executive Producer: Alexandra Feachem
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