Question

which technology is not used to gather observations about the big bang theory?
spectroscope
satellites
microscopes
telescopes

Explanation:

Spectroscopes analyze light from distant objects for cosmic information related to the Big - Bang. Satellites can detect cosmic microwave background radiation. Telescopes observe distant celestial objects and phenomena related to the early universe. Microscopes are used to view small - scale objects like cells and microorganisms, not for cosmic observations related to the Big Bang Theory.

Answer:

Microscopes