Cosmic tsunami can revive ‘dead’ galaxies: researchers say

April 26, 2015 12:35 PM

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Cosmic tsunami can revive ‘dead’ galaxies: researchers say

Intense energy released by collisions between galactic clusters can revive 'dead' or 'sleeping' galaxies, though only temporarily, an international team of researchers said.

A galaxy is pronounced dead when it has expanded to its full capacity over a very lengthy period of time, and stopped creating new stars. Many starts of such a galaxy have also used their energy, leaving the galaxy "red & dead".

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