Are There Parts of German WW1 Warships in Space?

TL;DR

Explores the possibility of German WW1 warship steel in space.

Transcript

This Video was made possible by Blue Apron, the first 100 people to sign up with the link in the description will get three free and delicious meals from Blue Apron. Last month, while hanging out with Minute Physics, Smarter Every Day and 3BLUE1Brown at Vidcon we started exploring the possibility that there are parts of World War 1 era German Warsh... Read More

Key Insights

• The video investigates whether parts of German WW1 warships are aboard the Voyager satellites, a claim with no definitive proof.
• Low-background steel from pre-nuclear era ships is valuable for constructing sensitive sensors due to minimal radioactivity.
• German warships sunk in Scapa Flow are a known source of low-background steel, salvaged for various uses.
• The Voyager satellites likely do not contain steel from these ships, as they lack radiation sensors requiring low-background steel.
• Explorer 1, launched in 1958, may have used low-background steel for its radiation sensors, but confirmation is elusive.
• The need for low-background steel is decreasing due to nuclear test treaties and the short half-life of isotopes like Cobalt-60.
• Background radiation has significantly decreased from its peak in 1963, lowering the demand for low-radioactivity materials.
• The video is sponsored by Blue Apron, offering meal delivery services with fresh ingredients and easy recipes.

Questions & Answers

Q: Why is low-background steel important for space missions?

Low-background steel is crucial for constructing sensitive instruments like radiation sensors because it has minimal radioactivity. This ensures accurate readings, as the materials themselves do not interfere with the measurements. Steel produced after nuclear tests is contaminated with radionuclides, making pre-nuclear steel highly valuable for such applications.

Q: What is the significance of the Scapa Flow warships?

The Scapa Flow warships, sunk during WW1, are a significant source of low-background steel. These ships have been shielded from post-nuclear test contamination, making their steel ideal for scientific instruments requiring low radioactivity. Their historical and archaeological value also makes them protected sites, limiting large-scale salvage operations.

Q: Could Voyager 1 contain steel from German warships?

It is highly unlikely that Voyager 1 contains steel from German warships. The satellite lacks radiation sensors that would require low-background steel. Additionally, the construction details of Voyager 1, documented by NASA, do not indicate the use of such steel for its components, further reducing the likelihood of this claim.

Q: Why might Explorer 1 have used low-background steel?

Explorer 1, launched in 1958, was equipped with radiation sensors to study space radiation levels, making it a candidate for using low-background steel. This steel would ensure accurate sensor readings by minimizing interference from the material's own radioactivity. However, confirming the exact source of the steel used remains difficult.

Q: How has the need for low-background steel changed over time?

The need for low-background steel has decreased due to treaties limiting nuclear tests and the natural decay of radioactive isotopes like Cobalt-60. Background radiation levels have significantly dropped from their peak, reducing the demand for materials with minimal radioactivity, as newer steel is becoming less contaminated over time.

Q: What role does Blue Apron play in the video?

Blue Apron sponsors the video, offering meal delivery services that provide fresh ingredients and easy-to-follow recipes. The sponsorship highlights the convenience of their service for busy individuals, promoting healthy eating by delivering pre-portioned ingredients directly to customers' homes, with the first 100 sign-ups receiving free meals.

Q: What was the primary mission objective of Explorer 1?

Explorer 1's primary mission was to investigate space radiation levels and assess the feasibility of human space travel. It included radiation sensors to measure cosmic rays, leading to the discovery of the Van Allen Belt, a region of high radiation around Earth caused by trapped solar wind particles, confirming Dr. James Van Allen's theory.

Q: How does the video address the historical context of nuclear testing?

The video explains that nuclear tests, starting with the Trinity Test in 1945, contaminated the atmosphere with radionuclides, affecting steel production. These tests increased global background radiation, peaking in 1963. The historical context underscores the value of pre-nuclear steel, as it remains uncontaminated and ideal for sensitive scientific instruments.

Summary & Key Takeaways

• The video explores the intriguing possibility of German WW1 warship steel being used in space satellites, specifically the Voyager and Explorer 1 missions. While no conclusive evidence exists for Voyager, Explorer 1 may have utilized low-background steel for its radiation sensors.

• Low-background steel, sourced from pre-nuclear era ships like those sunk in Scapa Flow, is prized for its minimal radioactivity, essential for constructing accurate radiation sensors. However, the demand for such steel is decreasing as background radiation levels fall.

• Despite the captivating hypothesis, the video concludes that it is highly unlikely Voyager contains German warship steel. However, Explorer 1's mission to study space radiation levels leaves a small possibility of its use, though confirmation remains challenging.