A new research has claimed that Earth is around 70 million years younger than previously assumed by scientific community.

Researchers say that their research showed Earth is 70 million years younger than the 4.537 billion-year-old planet. It was previously thought that it took 30 million years for the Earth to accumulate to its present size however the new research showed that it took 100 million years.

''If correct, that would mean the Earth was about 100 million years in the making altogether," said Dr John Rudge, research fellow at Trinity College, Cambridge.

''We estimate that makes it about 4.467 billion years old - a mere youngster compared with the 4.537 billion-year-old planet we had previously imagined,'' he added.

According to the research the Earth is about 4.467 billion-years-old. Researchers compared geochemical information from the Earth's mantle with data from the asteroids that fell on the Earth. The team found traces of
182-tungsten on Earth's molten core and the mantle from the surface of the planet.

The team analyzed the half life of isotopes of Earth tungsten that is expected to have undergone radioactive decay during the accretion. Then the team compared it to the asteroids. These meteorites fall onto the surface of the earth but have never undergone metal segregation.

With the comparison the team was able to prepare mathematical models redrawing the ways in which the accretion took place. Dr Rudge explained that subject is based on the calculation of how long it took for the core of the Earth to form. He says that science assumes that the accretion process happened at a decreasing rate. The team believes that the process is much more complicated and the process would have been more staggered and anon continuous course.

''We believe that the process may not have been that simple and that it could well have been a much more staggered, stop-start affair."

The research titled, ''Broad bounds on Earth's accretion and core formation constrained by geochemical models'' will be published in the latest issue of Nature Geoscience.