A star is born through the combination of interstellar particles from clouds of dust and gas. The birth of a star requires a disturbance, such as the movement of a comet through the particles, to start the formation.Know More
The nebulae of dust and gas particles remain inactive for several years until something happens that causes the gas and dust to be disturbed. As the force of the disturbance moves through the cloud, the particles start to collide and create clumps. The individual clumps gain more mass, which increases their gravitational pull, which attracts even more particles from the original cloud. As more matter is added to the clump, the center of it becomes hotter and denser. Through millions of years, the clump grows into a small, dense body known as a protostar. As a protostar, the clump continues to draw in even more gas and get even hotter.
The process of the protostar increasing in temperature and growing larger continues until the star gets so hot that hydrogen atoms start to fuse, which creates helium and energy. After millions of years, a sudden bipolar flow erupts from the protostar, and it blasts away all of the remaining dust and gas.Learn more about Constellations
The brightest star in the eastern sky that shines after dusk is Vega. This star is considered to be the main star of the Summer Triangle. Deneb is the next brightest star, appearing on Vega’s left, and Altair appears to the right.Full Answer >
A star constellations chart is useful for determining the viewer's position on Earth by comparing the locations of visible stars. Constellation charts are also useful for astronomers in plotting the locations of the stars and the Earth.Full Answer >
The North Star, also known as Polaris, is a part of the constellation Ursa Minor. Ursa Minor is also referred to as the Little Bear or the Little Dipper.Full Answer >
While Capella appears to be a single star, it is actually a group of four stars that make up the sixth-brightest object in the night sky. The two stars that make up the brightest part of Capella have a surface temperature comparable to the Sun, about 4,900 degrees Kelvin.Full Answer >