Leonardo DiCaprio has achieved so much as an actor on earth, you might think he's getting a little bored of life on the planet.

Well, he teased a certain interest in Mars recently, but it looks like he was just joking. DiCaprio said during a talk with President Barack Obama about climate change that he had signed up to visit Mars on Elon Musk's first trip there. Musk, the CEO of Tesla Motors and SpaceX, plans to get humans to Mars as soon as 2025, a journey Musk expects to be quite risky.

DiCaprio said this while talking to Obama and the climate scientist Dr. Katharine Hayhoe on Monday as part of the South by South Lawn event at the White House, Inverse reports. The three discussed climate change before the premiere of DiCaprio's new documentary on the subject, "Before the Flood."

Musk and the Mars trip came up while Hayhoe was explaining the need to get regular people to connect to the reality of climate change and its effects.

"The reality of it is, if you're a human living on this planet - which most of us are, yeah?" Hayhoe joked. "As long as we haven't signed up for the trip to Mars. I don't want to know if anyone has - I think you're crazy."

That's when DiCaprio said, "I did."

But a source close to DiCaprio has told Business Insider that the actor was in fact joking about the potential Mars trip.

That didn't stop the president from making another joke. Obama reportedly deadpanned, "I think you'll acknowledge he's crazy."