- 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.