Element Origins After the Big Bang, the ordinary matter in the Universe was composed primarily of just two elements: hydrogen and helium. Currently, there are a wide range of elements, from argon to zirconium. These more complex elements were nearly all produced via stellar evolution processes. The formation of new elements is called nucleosynthesis . Below, I have describe the basics of the chemistry of the Universe and how it has changed over time. Big Bang Nucleosynthesis The star-forming region 30 Doradus. The blue stars are massive, hot, young stars. They have formed in a cluster out of gas and dust. (Credit: NASA, ESA, HST WFC3) When the Big Bang occurred approximately 14 billion years ago, the Universe was very hot and dense. Over time, the Universe expanded and cooled down. Approximately 0.001 seconds after the Big Bang, particles (e.g., protons and neutrons) began to fuse together to form atomic nuclei, dubbed nuclear fusion . Nuclear fusio...
Space is something that fascinates many as humans are naturally curious and the cosmos is the biggest mystery, because unless humans become space-faring there will always remain unanswered questions such as where we came from,where we are going,why is the universe organized as it is?Are we alone? And how physics works under conditions which are impossible to recreate on Earth. universe This site is to create awareness about various different spacial entities and also to make everyone realize how insignificant the human physical existence is,and how great the human mind, with an intelligence that is now embracing a dazzling range of phenomena,from the astronomically large to the infinitely small. Astronomy has always been my passion since my childhood. I started looking at the pictures in astronomy books before I could even read. The pictures were beautiful,fascinating and intriguing. As I grew up I wanted to know all about what those pictures meant.I am still learning. ...
Super massive "Black Hole" and Quasar in the center of a Galaxy In this vast universe, there are several galaxies with a black hole and quasar in its midst... but, these objects are so mysterious that more we want know them the more distant they seem. QUASAR Quasars, the most distant objects discovered by astronomers in the Universe, are very bright, large point-like objects just like stars; most are larger than our Solar System , and they radiate enormous amounts of energy. Quasars can be a trillion times brighter than the Sun ; they radiate more energy than 100 normal galaxies combined. Quasars are most likely the centers of active galaxies, and may produce their energy from the huge black holes found in the center of the galaxies in which the quasars are located. Quasars drown out the light from all the other stars in the same galaxy because they are so bright. Quasars look like stars, but are much farther away than ...
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