Another masterstroke for James-Webb with this composite image of a surprising wheel-shaped galaxy. The penetrating view of the powerful space telescope shows never-before-seen details of this galaxy which collided about 400 million years ago. What do they show us?
The picture of thetaken by in 2007 and revisited in 2018 amazed us all by the beauty and complexity of this annular shape deformed by a violent collision. Observations in the visible and the by the famous space telescope entertained the for the details of its outer crown, set ablaze by the birth of a multitude of stars, the active central region and the spokes of its wheel, curved in a spiral, which resisted the shock.
This time, the different vision ofin the infrared, offers in-depth knowledge of this interacting galaxy located 500 million light-years from Earth. We thus discover, not without fascination and vertigo, what the researchers did not see before, or only badly: the skeleton of dust and of 350-40 (his real name), as well as the effervescence of his central.
A very active galaxy
In the distant past, this so-called Chariot Wheel galaxy resembled our own, thesporting a spiral shape like a until interactions with other members of his galactic group led him to a high-speed collision with a galaxy, here located out of frame. That was about 400 million years ago, and now we admire and study what resulted from that, the evolution, the changes in its and the population of stars under the influence of shock waves on the of dust. The two concentric rings are like the waves created on the surface of the water after the throwing of a pebble. The the largest forms a sparkling crown of young stars whose matrixes were fertilized by the violent compression of the . The spectacle is even more vivid within the inner ring and at the very heart of the galaxy, visibly in full boiling, as shown by the which reveals clusters of stars once hidden by thick veils of dust.
The composite image that combines the observations ofand also allow you to see fine details of neighboring galaxies and to flush out a multitude of other galaxies, scattered in the background over billions of light years. A dazzling spectacle, “and this is still only the beginning”.