Astronauts slam US rapper's plan to find if Earth is flat

The second person to walk on the Moon Buzz Aldrin slammed American rapper B.o.B over his crowdfunding campaign which seeks $1 million to launch satellites to find if Earth is flat. Further, NASA astronaut Terry Vits who has been on an ISS expedition, tweeted, "The Earth is round. I flew around it." B.o.B's campaign has generated $4,700 since last week.