On the lateral surface of the human brain, the central sulcus separates the frontal lobe from the parietal lobe. The lateral sulcus separates the frontal lobe from the temporal lobe. The frontal lobe bottom can be divided into a lateral, polar, orbital (above the orbit; also called basal or ventral), and medial part.
The age of an individual star can vary; they were all made at different times and have different life spans. Stars can range from a few million to a several billion years old. The oldest star yet discovered, HE 1523-0901, is an estimated 13.2 billion years old.
Our sun is 25,000 light years from the center of the Milky Way. The oldest star in the galaxy is 13.2 billion years old. The stellar disk of the Milky Way Galaxy is approximately 100,000 light years in diameter and is about 1,000 light years thick. It is estimated to contain up to 400 billion stars.