Astronomy Picture of the Day

NGC 7635: The Bubble Nebula  Image Credit & Copyright: Larry Van Vleet Explanation: It's the bubble versus the cloud. NGC 7635, the Bubble Nebula, is being pushed out by the stellar wind of massive central star BD+602522. Next door, though, lives a giant molecular cloud, visible to the right. At this place in space, an irresistible force meets animmovable object in an interesting way. The cloud is able to contain the expansion of the bubble gas, but gets blasted by the hot ... Full Story