<![CDATA[ Our solar system's famous "invader" might be as old as the Milky Way itself. ]]>
Interstellar objects are celestial bodies that originate from outside our solar system. They provide valuable insights into the formation and evolution of planetary systems and the conditions of the early universe.
The cosmic age refers to the time since the Big Bang, estimated to be about 13.8 billion years. Understanding the age of celestial objects helps astronomers determine the history and evolution of the universe.