Dr Karl’s a curious optimist – a great combination for a science lover. Join him and his guests for weird facts, amazing conversation and remember, it’s never too late for a happy childhood.
One star, observed in outback Australia, may hold new clues to dark matter and black holes. It's a milky way neighbour but moving very fast. Prof Geraint Lewis takes Dr Karl on his quest for answers. http://www.physics.usyd.edu.au/~gfl/