Sounding rocket found infrared light in dark space between galaxies Glow is thought to be from orphaned stars flung out of galaxies Findings redefine what scientists think of as a galaxy

By Mark Prigg for MailOnline

Published: 19:17 EST, 6 November 2014 | Updated: 08:03 EST, 7 November 2014

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Nasa has detected a surprising surplus of infrared light in the dark space between galaxies.

Baffled astronomers say the lights is a diffuse cosmic glow as bright as all known galaxies combined.

They believe it could be from orphaned stars flung out of galaxies.

This artist's concept shows a view of a number of galaxies sitting in huge halos of stars. The stars are too distant to be seen individually and instead are seen as a diffuse glow, colored yellow in this illustration. The CIBER rocket experiment detected this diffuse infrared background glow in the sky and found that the glow between galaxies equals the total amount of infrared light coming from known galaxies.

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Nasa spots mystery light as bright as ALL known galaxies combined