Researchers from Israel, the U.S. and Japan are  saying that the nuclear clock used to measure the age of the solar system has been “ticking faster” than previously thought and that the Earth formed much more quickly than originally believed.Paul and his team from the University of Notre Dame and the Argonne National Laboratory and two Japanese universities, reexamined Samarium 146, one of the main isotopes used to track the evolution of the solar system. They found that its half life was only 68 million years and not the 103 million as previously thought.

According to Paul, the age of the solar system has not changed. But the time it took to form the Earth is shorter than it was estimated before.

The findings, published in the journal Science, have yet to be accepted by the astrophysicist community. Nor do the findings alter the age of the universe, which is generally believed to have been formed about 4.6 billion years ago.

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