About Nuclear Fusion in Stars - Sciencing
网页2017年4月24日 · Nuclear fusion is the lifeblood of stars, and an important process in understanding how the universe works. The process is what powers our own Sun, and therefore is the root source of all the energy on Earth.
Nuclear fusion - Wikipedia
网页Nuclear fusion is the process that powers active or main-sequence stars and other high-magnitude stars, where large amounts of energy are released. A nuclear fusion process that produces atomic nuclei lighter than iron-56 or nickel-62 will generally release energy.
Nuclear fusion - Stars, Reactions, Energy | Britannica
网页2024年9月27日 · The proton-proton nuclear fusion cycle in a star containing only hydrogen begins with the reaction H + H → D + β + + ν; Q = 1.44 MeV, where the Q -value assumes annihilation of the positron by an electron.
Stellar nucleosynthesis - Wikipedia
网页In astrophysics, stellar nucleosynthesis is the creation of chemical elements by nuclear fusion reactions within stars. Stellar nucleosynthesis has occurred since the original creation of hydrogen, helium and lithium during the Big Bang. As a predictive theory, it yields accurate estimates of the observed abundances of the elements.
Stellar Structure and Evolution - Center for Astrophysics
网页Nuclear fusion is what makes a star what it is: the creation of new atomic nuclei within the star’s core. Many of stars’ properties — how long they live, what color they appear, how they die — are largely determined by how massive they are.
What is nuclear fusion? | Space
网页2022年9月21日 · Nuclear fusion powers the stars. The key to understanding how fusion generates energy is Albert Einstein's infamous equation explaining how energy equals mass times the speed of light...
How nuclear fusion works to let stars shine - EarthSky
网页2023年7月16日 · Nuclear fusion reactions power the sun and other stars. In a fusion reaction, two light nuclei of atoms merge to form a single heavier nucleus. The leftover mass becomes energy.
Nuclear fusion: new record brings dream of clean energy closer - BBC
网页2024年2月8日 · Nuclear fusion is the process that powers stars. Scientists believe it could produce vast amounts of energy without heating up our atmosphere.
Neutrinos reveal final secret of Sun’s nuclear fusion - Nature
网页2020年6月24日 · By catching neutrinos emanating from the Sun’s core, physicists have filled in the last missing detail of how nuclear fusion powers the star.
Nuclear Fusion: The energy source of stars - Harvard University
网页2004年8月30日 · The energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. When the core is hot enough, nuclear fusion commences. Fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.