A study reveals that a gas cloud 20 times larger than the Milky Way may have been left by a cosmic intruder

Scientists have discovered a massive trail of gas drifting from quintiles of warring galaxies. A new study has revealed that a mysterious gas cloud – the largest ever around a group of galaxies – may have been left by a “cosmic intruder”.

The cloud – an unexplained two-million-light-year-wide stream of hydrogen gas from the galactic group known as Stephan’s Quintet – was discovered by the deepest survey of the region ever by the Five Hundred Meter Aperture Globe Telescope (FAST) in China. Researchers believe that the gas path,And the It can be “tidal debris” formed after rotation galaxies Collision with a large cosmic intruder nearly a billion years ago.

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