A star's energy comes from the combining of light elements into heavier elements in a process known as fusion, or "nuclear burning". The helios project Britannica and NASA.
It is generally believed that most of the elements in the universe heavier than helium are created, or synthesized, in stars when lighter nuclei fuse to make heavier nuclei. The process is called nucleosynthesis. Nucleosynthesis requires a high-speed collision, which can only be achieved with very high temperature.
The minimum temperature required for the fusion of hydrogen is 5 million degrees. Elements with more protons in their nuclei require still higher temperatures. For instance, fusing carbon requires a temperature of about one billion degrees! Most of the heavy elements, from oxygen up through iron, are thought to be produced in stars that contain at least ten times as much matter as our Sun.
Our Sun is currently burning, or fusing, hydrogen to helium. This is the process that occurs during most of a star's lifetime. After the hydrogen in the star's core is exhausted, the star can burn helium to form progressively heavier elements, carbon and oxygen and so on, until iron and nickel are formed. Up to this point the process releases energy. The formation of elements heavier than iron and nickel requires the input of energy.
Supernova explosions result when the cores of massive stars have exhausted their fuel supplies and burned everything into iron and nickel. The nuclei with mass heavier than nickel are thought to be formed during these explosions.
Charity & Volunteering
Make a contribution
Koko Chanel coming soon
Koko The Walk former Pilgrim
Educational, Science and Cultural Organization Learn Discover Research Registered Under ECOSOC Of The United Nations
Tax Exemption Notice 27 November 2015: Internationally. All new partners are subject to tax
Disclaimer: The Koko&Teddy Edition Supports Counter Terrorism & Counter Fraud work with words not guns Pyscholingustics as corruption evolves for peace under the United Nations. The Organization is forbidden to undertake any intervention or activities of a political, military, religious or racial character. We are not affiliated with other Koko Enterprises. We store articles data posts in advance for our partners. Please note Kord House is pseudonym house created by Director of Publications The Advocate (O.A.J) UN Office of Administration of Justice for Journals Isabel Cutter - Curia & Legal Cashier.
Founded on 19 April 1895 Waterlily
Established 2009 - Blog Koko & Teddy on expiry of secret service laws
2014 November - We adopted the United Nations and they adopted us as family
World Intellectual Property Organization Under the United Nations Patent Treaty Cooperation under Copyright 24 October 1945 Advocates for Koko &Teddy Partners
Koko - Kord Enterprises Trading as Kord Industries Kord Omniversal Research and Development Its in our DNA The Triple Knock Out in Molecular Biology TKO Vitamin K. Copyright Privacy Koko & Teddy All Rights Are Reserved
BINGO CSO: 'Civil Society Organization Business-friendly international NGO Founder Isabel Cutter Freelance Journalist