Only lead? Sorry charlie. Once again you show why your version of reality is filled with inaccuracies. You're living in a place that has a "matrix". An imaginary place.
Lead (when struck by space radiation radiation particles) generates more secondary particles (neutrons and other particles) and can be worse for the astronaut's health than the primary space radiation. The link below shows that the weight of lead isn't the most disqualifying property of that material.
"Problems with shields arise when space radiation particles interact with the atoms of the shield itself. These interactions lead to production of nuclear byproducts called secondaries (neutrons and other particles). If the shield isn’t thick enough to contain them, the secondaries that enter the spacecraft can be worse for astronauts’ health than the primary space radiation. Surprisingly, heavier elements such as lead produce more secondary radiation than lighter elements such as carbon and hydrogen.
Consequently, a great deal of research has been performed on a lightweight polyethylene plastic, called RFX1, which is composed entirely of lightweight carbon and hydrogen atoms.
Research shows that polyethylene is 50% better at shielding solar flares and is 15% better at shielding galactic cosmic radiation as compared to aluminum. Water is another hydrogen-rich molecule that can absorb radiation. However, the oxygen content in water makes it a lot heavier than polyethylene, and therefore is much more expensive to launch. Generally, lighter shields can greatly reduce the harmful effects of incoming space radiation particles, but they cannot completely stop them."
https://www.nasa.gov/wp-content/uplo...ce%20radiation.
Only lead can stop dangerous radiation, hence the lead apron at the dentist office. Only a lead space craft could have protected those astronauts from a 25 thousand mile radiation belt. Lead spaceships are too heavy to fly. But if you wanna stay in the matrix, be my guest. I will continue to enjoy the advantages of NOT living there. Enjoy your fantasies while you can.
Originally Posted by HoHound