United Kingdom, March 14 -- Steven Spielberg believes in aliens and has warned "we are not alone on Earth".

The 79-year-old filmmaker's upcoming movie Disclosure Day is about UFOs and while he "doesn't know" for sure if extra-terrestrials exist, he has a "very strong suspicion" that they do, and he was thrilled when former US President Barack Obama recently declared aliens are "real".

Speaking during The Big Picture with Steven Spielberg Live conversation at SXSW festival in Austin, Texas, on Friday (13.03.26), he said: "I don't know any more than any of you do, but I have a very strong suspicion that we are not alone here on Earth right now - and I made a movie about that."

Of Obama's recent comments, he admitted his first thought was...