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Our planet contains mysteries that are yet to [being / be] unravelled. Many of them focus on [how / what] the Earth formed, and what is at the centre of our planet. A [recent / recently] study provides clues as to what shaped Earth at the beginnings of our [polar / solar] system. Scientists say they have discovered [evidential / evidence] that vast amounts of a rare, primordial form of the gas helium may be trapped inside Earth's [corps / core] . It is called helium-3. Scientists from universities in Japan and Taiwan [believe / belief] the helium-3 is from a giant cloud of gas and [rust / dust] that amalgamated to create different planets. The gas has remained locked inside Earth's [mantle / meddle] for billions of years, but is occasionally released in volcanic [eruptions / contraptions] .

The research paper has created [consider / considerable] excitement among planetary geologists. They believe the [presents / presence] of large amounts of helium-3 could unlock more [secrets / secretes] of the Big Bang. [In / On] particular, the scientists are speculating that [is / there] being so much helium-3 under the Earth's mantle could mean that Earth was created much more [quickly / quicker] than previously thought. Dr Peter Olson, a geophysicist at the University of New Mexico, shed light [of / on] the possible speed of Earth's creation. He said: "There is evidence [what / that] has been interpreted to say the Earth formed very [slowly / slow] , requiring 100 million years. [However], you wouldn't get [many / much] helium deep in the Earth if the Earth formed that slowly."