25/09/2025
Somethin’ out of the ordinary 💫
Webb took a look at Sagittarius B2 molecular cloud, the most massive, and active star-forming region in our galaxy, located only a few hundred light years from our central supermassive black hole. Astronomers want to figure out why it is so much more active than the rest of the galactic center. While Sgr B2 has only 10% of the galactic center’s gas, it produces 50% of its stars.
Even with Webb’s sensitive infrared capability, which allows it to see through clouds of dust and gas, there are regions so dense that even Webb can’t see through them. These thick clouds are the raw material of future stars and a cocoon for those still too young to shine.
Webb produced these two images of Sgr B2 - the bottom half shows the mid-infrared view of this region. Our Mid-Infrared Instrument captured glowing cosmic dust heated by very young massive stars in unprecedented detail. Note that while the dust and gas glow dramatically, all the bright stars disappear from view. In contrast, in the near-infrared (top half of the image), it’s the colorful stars that steal the show. Astronomers will seek to learn more about their masses and ages, to better learn about how stars are formed in this dense, active region of the galactic center.
Read more: https://go.nasa.gov/3W7oCcw
Image credit: Image: NASA, ESA, CSA, STScI, Adam Ginsburg (University of Florida), Nazar Budaiev (University of Florida), Taehwa Yoo (University of Florida); Image Processing: Alyssa Pagan (STScI)
Image description: Two images of space, one on top of the other. The bottom half depicts a swirling patch of red and magenta clouds, with bright blue, six-pointed spots shining through. In the top half, the same image is seen in shades of orange, but the stars are much more numerous, filling the screen almost completely.