What's Eating the Universe?

Celebrated physicist and global bestselling author Paul Davies tells the story of the universe in thirty cosmological conundrums
In the constellation of Eridanus there lurks a cosmic mystery. It's as if something has taken a huge bite out of the universe, leaving a super-void. What could be the culprit? A super massive black hole? Another, bigger universe? Or an expanding vacuum bubble, destined to envelop and annihilate everyt