Rare intergalactic supernova may have been seen outside the Milky Way

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A ring-shaped entity 160,000 airy years distant whitethorn beryllium the archetypal intergalactic supernova remnant ever observed

Space 26 January 2022

By Jonathan O’Callaghan

New Chandra observations person been utilized to marque the archetypal detection of X-ray emanation from young stars with masses akin to our Sun extracurricular our Milky Way galaxy. The Chandra observations of these low-mass stars were made of the portion known arsenic the "Wing" of the Small Magellanic Cloud (SMC), 1 of the Milky Way's closest galactic neighbors. In this composite representation of the Wing the Chandra information is shown successful purple, optical information from the Hubble Space Telescope is shown successful red, greenish and bluish and infrared information from the Spitzer Space Telescope is shown successful red. Astronomers telephone each elements heavier than hydrogen and helium - that is, with much than 2 protons successful the atom's nucleus - "metals". The Wing is simply a portion known to person less metals compared to astir areas wrong the Milky Way. The Chandra results connote that the young, metal-poor stars successful NGC 602a nutrient X-rays successful a mode akin to stars with overmuch higher metallic contented recovered successful the Orion clump successful our galaxy.

The remains of a prima that exploded successful intergalactic space, extracurricular the realms of immoderate galaxy, whitethorn person been spotted by astronomers for the archetypal time.

Many exploding stars, oregon supernovae, person been seen crossed the universe. While astir reside wrong galaxies, immoderate person been seen outside galaxies. These are known arsenic intergalactic supernovae, and whitethorn person ended up determination aft the stars were thrown from their big galaxies. We …

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