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NGC 4650A Galaxy is a galaxy located in the direction of the Cetus constellation and classified in astronomical literature as a "polar ring galaxy." First discovered in the mid-20th century, this galaxy attracts attention due to its ring structure, which is positioned at a right angle to the main body. NGC 4650A is one of the best-studied and exemplary celestial objects among polar ring galaxies.Structural FeaturesThe structure of NGC 4650A consists of two main components: a central elliptical o

The sharp image of the Sagittarius A* black holeBlack are cosmic structures with a gravitational field so strong that not even light can escape. Supermassive black holes can have masses of millions or even billions of Sun and are typically found at the centers of galaxies. At the center of the Milky Way, the region known as Sagittarius A* (Sgr A*) has a mass of approximately four million solar masses and is located about 26,000 light years from World. Black holes cannot be observed directly, but

Galaxy Evolution Explorer (GALEX) is a space telescope mission launched by the United States National Aeronautics and Space Administration (NASA) in 2003. The primary objective of the mission is to investigate the formation and evolution processes of galaxies in the universe by observing them in the ultraviolet wavelengths.Throughout its mission duration, GALEX provided significant data on star formation processes by studying ultraviolet radiation coming from galaxies billions of light-years awa