A 5-foot diameter metal sphere, yellowed with rust, partly embedded in the sand on a beach in Hamamatsu, Japan, on February 18, 2023. Two figures in black protective gear and helmets stand nearby.
A metal sphere, 5 feet in diameter, washed up on a Japanese beach and has mystified authorities.
  • Even Neil deGrasse Tyson doesn't have an explanation for the mysterious ball that washed up in Japan.
  • When asked about the ball, the astrophysicist told CNN's Don Lemon he has "no idea" what it is. 
  • But it's probably not as interesting as what people are imagining it to be, he added. 

A large metal ball that washed up on a beach in Japan has stumped everyone, including celebrity astrophysicist Neil deGrasse Tyson.