What are the most extreme years in the universe?

The video explores the concept of years on different celestial bodies, starting with Mercury's short year and long day. It explains how exoplanets are detected and why most have short years. The shortest known year is on a pulsar, while the shortest around a main sequence star is K2-137 b. The longest planetary year is around a Jupiter-type object, and the longest overall is a galactic year, taking 250 million years. The video concludes by reflecting on the vastness of space and time.

Describe the characteristics of K2-137 b and its year length.

What is a Galactic year and how long does it take for the Earth to complete one?

How do the lengths of years on different celestial bodies illustrate the vastness of time in the universe?