Given the massive financial and critical success of Guardians of the Galaxy, it would be no surprise if Marvel wanted to take some of their other massively-successful Avengers characters to space.

...But it's not Marvel who's talking about it; fans and the press have been the ones to repeatedly bring up the idea of Planet Hulk...and now, actor Mark Ruffalo.

Here's part of a conversation between Ruffalo, his co-star/onscreen love interest Scarlett Johansson and IGN:

Mark Ruffalo: "I think there's a lot of places to go with him [Hulk]."

Scarlett Johansson: "Like where?"

IGN: "Space?"

Ruffalo: "Well he's going to space. Yeah, I mean there's some talk of maybe Planet Hulk."

IGN: "Would you like to see that?"

Ruffalo: "I'd be completely interested in entertaining that."

The Planet Hulk rumors have been everywhere for years, starting before Guardians ever took the Marvel Universe cosmic. Of course, a few choice words from the actor...? Even the original report notes that it could come to very little.

The Incredible Hulk will appear next in Avengers: Age of Ultron, due in theaters May 1.