Researchers are looking for globular clusters in space as it contains millions of stars that may have emerged at the same time. These structures are the oldest to be viewed in the Universe. The globular clusters are dense and have a spherical volume with a diameter lower than our galaxy. The Milky Way is found to be orbited by almost 150 globular clusters that are visible in the dark. Around thousands of globular clusters can be found surrounding large galaxies that are located at the heart of the galaxy clusters. The galaxy clusters are found to have hundreds or thousands of galaxies held together with gravity and infused by hot gas. The globular structures are believed to be the result of the formation of the Universe some 13,800 million years ago. The clusters have remained the same except the aging of the stars and gradually their death.
The researchers have still not understood why the brightest galaxy forms in the center of the galaxy clusters. The globular clusters could possibly be the reason behind their brightness is what the researchers are predicting. According to Dr. Lim from the University of Hong Kong and his team, they have found thousands of new globular clusters to be forming from the cool gas in the galaxy located in the center of the Perseus galaxy cluster. A complex network of cool gas is found to be moving beyond the giant galaxy as well. The cool gas is found to arise from the hot gas that is present in the Perseus galaxy cluster and the concentration of the gas in the center makes cooling faster followed by the formation of newer globular clusters. The globular clusters once formed, then start raining into the giant galaxy like the raindrops. The central galaxies are expected to get brighter with cosmic time.
Likewise, the researchers working on the Pan-Andromeda Archaeological Survey found 92 globular clusters in the halo of the galaxy. The clusters near the core were ignored as they were believed to be shaped by the interaction with other bodies. The Doppler shift was used to obtain complete data related to the clusters’ local motion in connection with the rest of Andromeda.