Hubble is hunting for an unusual galaxy

(ORDO NEWS) — The Hubble image shows the Arp-Madore 417-391 galaxy merger.

The Arp-Madore catalog is a collection of particularly unusual galaxies scattered across the southern sky and includes selections of interacting galaxies and the most impressive colliding galaxies.

Arp-Madore 417-391 lies about 670 million light-years away in the constellation Eridanus. The two colliding galaxies were distorted by gravity and twisted into a ring, causing their cores to sit side by side.

Hubble used its ACS (Advanced Camera for Survey) camera to capture the scene. The instrument has been optimized to search the ancient Universe for both individual galaxies and their clusters.

The Hubble ACS has been contributing to scientific discovery for 20 years, and throughout its life it has been actively involved in everything from mapping the distribution of dark matter to studying the evolution of galaxy clusters.

This image is from a selection of Hubble observations designed to compile a list of interesting targets for follow-up observations with the James Webb Space Telescope, as well as other ground-based telescopes.

Astronomers have selected a list of galaxies to check with Hubble between other scheduled observations.

Over time, this will allow astronomers to create a “menagerie” of interesting galaxies, making the most of Hubble’s limited observing time.


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