Definition of Assonance. Assonance is the repetition of a vowel sound or diphthong in non-rhyming words. To qualify as assonance, the words must be close enough for the repetition of the sound to be noticeable. Assonance is a common literary technique used in poetry and prose, and is widely found in English verse.
Nevertheless, scientists have been able to determine the probable age of the Solar System and to calculate an age for the Earth by assuming that the Earth and the rest of the solid bodies in the Solar System formed at the same time and are, therefore, of the same age.
Why is the Earth younger than the moon and meteorites?: Current estimages of the age of the Solar System are 4.5 billion years, but the oldest rocks on the Earth are only 3.6 billion years old. This is younger than the oldest rocks from other solar system objects, why? Earth is geologically active. Earth has a hot, molten interior.