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This light-year-long knot of interstellar gas and dust resembles a caterpillar on its way to a feast. But the meat of the story is not only what this cosmic caterpillar eats for lunch, but also what's eating it
This is the first in a sequence of four pictures from the
Astronomers used the NASA/ESA Hubble Space Telescope to analyse light from the nearby star TRAPPIST-1 as it passed through the atmospheres of four Earth-sized planets in the star’s habitable zone — the region at a distance from the star where liquid water, the key to life as we know it, could exist on their surfaces. The astronomers were looking for the signatures of certain gases, including hydrogen, in the atmospheres that were imprinted on the starlight
This new NASA/ESA Hubble Space Telescope image shows ghostly green filaments, lying within galaxy 2MASX J22014163+1151237.
