cosmic rays
"The cosmic rays are like jet-planes: their trails remain for a time and show where they passed"
"Cosmic rays are like storytellers, bringing us tales of the origin and distribution of matter in the Universe. The types of cosmic rays that TIGER will collect provide clues to where the cosmic rays in general come from and what sent them flying to near light speed."
"Cosmic rays are like fossils from the Universe, and NASA has several Cosmic Journeys missions that will collect them."
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.