Astronomers catch super-energetic collision of dead stars

The distant neutron-star merger ejected one of the most powerful short gamma-ray bursts (GRBs) ever observed, according to new observations by ALMA, the Atacama Large Millimeter/submillimeter Array in Chile.

Neutron stars are super-dense stellar cores that are left over after massive stars explode, and when, say, two neutron stars collide, the result is a dramatic explosion, the light of which is a . is called kilonova, merger continues gravitational waves and a brief burst of gamma-ray radiation in two tight jets shooting in opposite directions into space.

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