Alliteration: Alliteration is a special case of consonance and refers to the repetition of consonant sounds or blends at the beginning of words or in the stressed syllables of a line. Since consonance may happen anywhere in a word, the concepts are related but not identical.
How Old is the Solar System? How old is the Solar System? That is a question that cuts to the heart of it all. By studying several things, mostly meteorites, and using radioactive dating techniques, specifically looking at daughter isotopes, scientists have determined that the Solar System is 4.6 billion years old.
That age can be extended to most of the objects and material in the Solar System. The United States Geological Survey(USGS) website has a lot of indepth material about how the age of the Solar System was determined. The basics of it are that all material radioactively decays into a stable isotope.