The advance in space exploration with telescopes or other instruments either on Earth or in Space allowed the detection of several planets on many Stars.
The analysis in the latest years allows detecting planets on outer Solar Systems. The analysis could predict the composition of the planet (spectrography), whether it is a gas giant (such as Jupiter and Saturn) or a rocky planet; and its orbit around the sun. For example, if the orbits are inside what is called "Goldilocks" zone where water on the liquid state can exist.
The analysis conducted so far only proves that some planets might be compatible with life but does not say anything with respect of actual presence of a life-form or which is its state (whether primordial or intelligent).
Rejecting the premises
Nasa site on exoplanets exploration: https://exoplanets.nasa.gov