Free Republic 3rd Qtr 2025 Fundraising Target: $81,000 Receipts & Pledges to-date: $0
0%  
Woo hoo!! 3rd Qtr 2025 FReepathon is now underway!!

Keyword: bd602522

Brevity: Headers | « Text »
  • Astronomy Picture of the Day -- Close-up of the Bubble Nebula

    04/03/2016 2:30:41 PM PDT · by SunkenCiv · 4 replies
    NASA ^ | Sunday, April 03, 2016 | (see photo credit)
    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 an immovable object in an interesting way. The cloud is able to contain the expansion of the bubble gas, but gets blasted by the hot radiation from the bubble's central star. The radiation heats up dense regions of the molecular cloud causing it to glow. The Bubble Nebula, featured here in scientifically mapped colors...