👉 A petrinist is a type of astronomer who studies and uses the data from the Perseid meteor shower to predict future events in astronomy. The Perseids meteor shower is a group of bright stars that are visible from Earth during the spring solstice, usually between March 20th and April 1st. Petinists use computer simulations, mathematical models, and astronomical observations to analyze the data collected during the Perseid meteor shower, which can help them predict future events