ALMA telescope spots ancient galaxy collision spewing titanic amount of gas – CNET

ALMA telescope spots ancient galaxy collision spewing titanic amount of gas – CNET


colliding-galaxy-alma

An artist’s impression of ID2299, a remnant of two galaxies that collided in the ancient universe.

ESO/M. Kornmesser

The world’s largest radio telescope has captured a violent moment in the early universe, some 9 billion years ago, shortly after the collision of two gigantic spiral galaxies. Astrophysicists believe the snapshot could provide some key insight on how galaxies grow and evolve — and potentially what causes them to stop growing.

The research, published in the journal Nature Astronomy on Monday, describes observations of the starburst galaxy ID2299, made by the Atacama Large Millimeter/submillimeter Array, or ALMA. After looking at over 100 galaxies, the ALMA team found ID2299 and discovered it was undergoing a “truly extreme event,” according to Emanuele Daddi, a co-author and astrophysicist at the French Alternative Energies
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