Galaxies usually exist in form of clusters; these clusters contain both active galaxies and galaxies that have ceased and formed starts several years back. A recent research has revealed that massive cosmic tsunamis might force these dead galaxies to wake up again.

A time span of billions of years often makes these galaxy clusters big enough for merging with other nearby galaxies. Collisions between these clusters results in formation of an energy shock wave that might give birth to new stars. That’s not all; scientists are saying that these shock waves are also capable of adding new life to the dormant galaxies.

It’s been quite some time since the researchers have found proofs supporting the existence of these massive cosmic tsunamis. However, to date, no study has been able to find evidence that prove that these tsunamis have any effect on the surrounding galaxies. This makes the study making the above mentioned revelation unique.


The said study was carried out by David Sobral and Andra Stroe of the Leiden Observatory. They came to the conclusion about the effects of cosmic tsunamis of dead galaxies after observing a merging galaxy cluster called CIZA J2242.8+5301. The cluster, which is fondly called “Sausage”, is situated as many as 2.3 billion light-years away from the Earth.

Stroe, in one of his recent statements, said that he and his research partner assumed that galaxies will play a supporting role in this entire act; however what they found was exactly the opposite. Galaxies were found to be playing leading roles in the said event.

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Stroe informed that the comatose galaxies within the Sausage cluster are currently getting back to life. Other than helping the galaxies to wake up, the cosmic tsunamis are also resulting in the formation of millions of new stars. According to Stroe, when he and his colleague first came across the above-mentioned facts, they appeared to be unbelievable to them.

Here, it must be mentioned that the shock wave that moves at a speed of 9 million Km/hour or 6 million miles/hour took place more than 1 billion years back. The event occurred due to a collision between two original galaxy clusters. Due to the huge distance between the spot of the event and the Earth, scientists are witnessing the actions now.

SOURCEScience Daily