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.
The method is to use the age of meteorites, because they are thought to have formed very early in the history of the Solar System. These ages are found using radioactive dati â¦ ng methods. The Solar System is estimated to be about 4.6 thousand million years old. 2 people found this useful.