According to Dr Kaku, who is a best-selling author and Professor at The City College of New York, such wandering objects are known to exist in the cosmos.
Appearing in a Big Think video in 2012, he said: “Realise that we orbit, we orbit the black hole at the centre of the Milky Way galaxy. That’s why we’re here today to talk about this on the internet.
“We’re not swallowed up by a black hole because we orbit around them.
“However, are there wandering black holes? And the answer is yes.
“In fact, we’ve been able to track wandering black holes as they wander through the galaxy.
source: express.co.uk