Atoms in and around humans once belonged to other galaxies, say scientists

An Òintergalactic transfer." Green lines show the trajectory of gas ejected in winds from nearby galaxies as it travels through space and is gravitationally captured by the central galaxy. (Daniel Angles-Alcazar/Northwestern University/PA Wire)
An Òintergalactic transfer." Green lines show the trajectory of gas ejected in winds from nearby galaxies as it travels through space and is gravitationally captured by the central galaxy. (Daniel Angles-Alcazar/Northwestern University/PA Wire) NOTE TO EDITORS: This handout photo may only be used in for editorial reporting purposes for the contemporaneous illustration of events, things or the people in the image or facts mentioned in the caption. Reuse of the picture may require further permission from the copyright holder.

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