ALT A time sequence of three panels side by side. From left to right, the panels are labeled November 8, 2025; November 9, 2025; and November 10, 2025. This series of images from Hubble of the fragmenting comet C/2025 K1 (ATLAS), or K1 for short. The sequence shows the progressive disintegration of the comet over this brief period. Each panel features several bright, fuzzy, blue, streaking lights in a diagonal line from the upper left to the lower right of a black background. In the first panel, four comet-like objects appear. The largest is the second from the upper left. In the second panel, the largest object has broken into two pieces. In the third panel, the pieces appear to be moving away from each other along the invisible diagonal line.
ALT A small, bright green region of gas is surrounded by a ring of glowing cosmic material, concentrated in pale clumps that resemble diamonds along a necklace. The rest of the image shows black space dotted with several bright stars and a couple small regions of dark red gas.
ALT This graphic features two artist's concepts and an X-ray and optical image depicting two cosmic collisions that began hundreds of millions of years ago. At the center of the large artist's concept is a brilliant glowing ball with a nearly white core, and golden orange outer layers. This ball represents the brightest galaxy in a collision between two groups of galaxies. Gas and dust from that collision were tossed into space in long tidal streams that resemble swooping blue streaks shooting off the brilliant ball. Near the end of one of the tidal streams is a tiny galaxy and an X-ray source presented in the middle of a close-up insert. In the center of the composite insert, Hubble observations in orange reveal the tiny galaxy buried in the stream. A pool of neon blue haze shows X-rays detected by Chandra from the collision of two ultra-dense neutron stars. The artist's concept in the other insert shows a close-up view of what the aftermath of a neutron star collision might look like.
