Quadral 21: Looking Into It Hard

One word:

  1. It is used in physics or chemistry.
  2. It is said at a town hall meeting.
  3. It takes a telescope to see it.
  4. (Twist) Must suggest that something is being located, tracked, or pinpointed.

AI will judge if your word fits—and if it's better than the AI's answer.

Need a hint?

The AI answer rhymes with the name of an amphibian.