search for signs of extraterrestrial life.
Part I:Astrophysical Perspective(Continued)
1.1 Formation of Star and Planetary Systems
The formation of stars is the result of the aggregation of matter in the universe.In molecular clouds,due to gravity,gases and dust aggregate to form stars.The mass and temperature of these stars determine their lifespan and luminosity,which in turn affect the climate and habitability of surrounding planets.Planetary systems are formed through the aggregation of matter in protoplanetary disks during the star formation process.The orbits,sizes,and compositions of these planets are crucial for the existence of life.
1.2 Classification and Characteristics of Planets
Planets can be classified into different categories based on their ma
