How do the scientists study the universe?

Answer 1

The universe can be explored by astronomical instruments called telescopes, and by space probes sent from earth to other planets. When using telescopes astronomers try to look at the energy being produced by the universe not just in the visible part of the spectrum (where our eyes can see) but at the whole range of electromagnetic radiation. We thus have radio telescopes, infrared telescopes, X-ray telescopes and even some telescopes that are buried deep underground looking for neutrinos.

I would like to add one more additional method for investigating universe, it just appeared in my brain.

well the method is being used in large hadron collider(which is a particle collider), in which smallest particle of any atom are collided at very high speed.

it tells us about the born of the universe, dat how did it happen.

They say "At Cern, the Large Hadron Collider could recreate conditions that last prevailed when the universe was less than a trillionth of a second old. It has massive particle detectors called the Compact Muon Solenoid."