The first Green Lantern trailer debuted to much fanfare this week, giving fans their first good look at Ryan Reynolds as Hal Jordan, Peter Sarsgaard as Hector Hammond, Mark Strong as Sinestro, and Blake Lively as Carol Ferris.

While some of the team here at Screen Rant, myself included, weren’t totally sold on the trailer, I still think Green Lantern could turn out to be a pretty great movie. Yes, we can quibble over the unfinished special-effects for the Green Lantern costume, or whether Blake Lively’s acting is up to snuff, but there is one thing that can’t be argued: Green Lantern will be a pretty epic Space Opera.

For those unfamiliar with the term, Wikipedia offers this convenient definition: “Space opera is a sub-genre of speculative fiction that emphasizes romantic, often melodramatic adventure, set mainly or entirely in outer space, generally involving conflict between opponents possessing advanced technologies and abilities.”

The key word in the definition of space opera is definitely “space.” While Christopher Nolan’s Batman films work because they are grounded in reality, Green Lantern’s origins necessitate something much more fantastic. The movie revolves around what is essentially a corps of galactic police officers. That’s why, more than anything else, I’m eager to see what the “space” portions of Green Lantern look like.

Luckily, that’s just what we get with this newly released Green Lantern poster. Depicting the Green Lantern home planet of Oa, the poster shows off Hal Jordan in full costume, with hundreds of other Green Lanterns behind him in the distance and (what we guess is) Sinestro standing on the peak. Check it out below. You can click the image for a high-res version.

While I wasn’t keen on the somewhat cartoonish feel of the Green Lantern trailer, I do recognize that the film shouldn’t be too grim and serious. I think the way to strike the right balance between fun and drama is to commit fully to the fantastical science-fiction elements of the movie, while still making Hal Jordan a fully-realized character with defined flaws and goals.

My guess (or at least my hope) is that Martin Campbell struck this balance with the film, and that subsequent trailers and clips will show off more of the grand scale of the Green Lantern universe. Now that the trailer has dropped, we shouldn’t have to wait long for new materials either, so make sure to check back to Screen Rant often in the coming weeks.

Green Lantern will be in theaters on June 17, 2011.