Cosmic Q&A: Light in Space, Astronaut Shielding, and Ice GiantsIn this engaging Q&A edition of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson tackle intriguing listener questions that delve into the mysteries of space. From the visibility of Voyager 1 in the depths of the...
Cosmic Q&A: Light in Space, Astronaut Shielding, and Ice Giants
In this engaging Q&A edition of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson tackle intriguing listener questions that delve into the mysteries of space. From the visibility of Voyager 1 in the depths of the solar system to the challenges of shielding astronauts from cosmic radiation, this episode is a treasure trove of cosmic knowledge.
Episode Highlights:
- Light in Space: Lee from New York City poses a thought-provoking question about how much light exists in space. Andrew and Fred explore the visibility of Voyager 1 and the implications of being far from the Sun, shedding light on human eye sensitivity and the ambient light from stars.
- Shielding Astronauts: Fenton from St. Paul, Minnesota, raises an important question about protecting astronauts from radiation beyond the Van Allen Belt. The hosts discuss potential technologies, including superconducting electromagnets and the surprising effectiveness of hydrogen-rich materials like water as radiation shields.
- Moon Comparisons: Robert from Vienna, Austria, wonders how our understanding of the solar system would differ if Earth had a moon like Europa or Titan, rather than our heavily cratered moon. The discussion highlights the significance of craters in understanding planetary history and the feasibility of landing on such moons.
- Ice Giants Explained: Duncan from Weymouth, UK, questions why Uranus and Neptune are termed "ice giants" instead of "rock giants." Andrew and Fred clarify the definitions and characteristics that distinguish these planets from their gas giant counterparts, emphasizing the unique atmospheric compositions.
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