Running in Circles... Sector 1 (Early-game spoilers)

[Faybro]

So, I was in sector 1, and [spoiler]after I got the diffusion beam and killed the war wasp hive with it and then killed the worms, I'm found running in circles trying to find how to get to the target at the dead end room with the Super Missile door. Halp?[/spoiler]

[Satch]

...sigh

Wall to your left has a morph ball tunnel at the bottom.

edit: wait, is this immediately after you fall down the slide? or w/e

[Faybro]

It wasn't that, but I found the way out. Thanks though!