After setting social media abuzz by saying on a podcast over the weekend that aliens were real, former President Barack Obama said he didn't see evidence that aliens "have made contact with us."

Sky News host Caleb Bond has commented on former US president Barack Obama’s comment about aliens after he appeared to suggest they exist in a recent interview.

"But the distances between solar systems are so great that the chances we’ve been visited by aliens is low, and I saw no evidence during my presidency that extraterrestrials have made contact with us....