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Nuclear Fusion

A reaction that involves two atomic nuclei merging to create the nucleus of a new atom. The reaction is accompanied by a tremendous release of energy. The Sun’s energy, as with all stars, comes from nuclear fusion reactions that happen in its core. The reactions fuse hydrogen nuclei into helium nuclei. About 0.7 percent of the mass of the hydrogen is converted to energy, which makes the star shine.

Resources

Aries, the ram

Aries, the Ram October 4, 2011

Sun cutaway

Star Color and Energy May 21, 2010

Radio Programs

Cobalt A bit of alchemy from the stars August 3, 2018

Procyon A star at a transition point January 20, 2018

Life of the Sun Our constantly changing Sun December 9, 2017

Moon and Regulus A star in the prime of life December 7, 2017

Neutrinos Zipping through the universe November 8, 2017

Moon and Aldebaran A stellar chemical factory November 5, 2017

Moon and Aldebaran The beginning of the end for a bright star October 8, 2017

Oxygen Breathing a creation of the stars July 24, 2017

Moon and Aldebaran The Moon faces the bull March 31, 2017

Making Elements IV Violent alchemy in the stars March 9, 2017

Making Elements III Heavy stars make heavy elements March 8, 2017

Making Elements II Making elements in the hearts of stars March 7, 2017

Moon and Aldebaran Things get complicated for a star September 20, 2016

More Hydrogen The most abundant element in the universe May 29, 2016

R Sculptoris Stirring up a stellar bubble December 11, 2015

Confirmation Particles from the heart of the Sun October 28, 2015

Alpha Persei A young star ages in a hurry October 8, 2015

The First Stars Whipping up the first stars July 15, 2015

Moon and Aldebaran Igniting the core of a star July 10, 2015

Fred Hoyle Unlocking the secrets of the stars June 23, 2015

Vega A middle-aged star with a difference June 5, 2015

Brighter Sun The Sun gets a lot brighter April 27, 2015

Solar Fusion The Sun shines on and on and on April 26, 2015

Iron Ironing out a heavy element February 4, 2015

Featured Images

Abell 78, a planetary nebula

Last Round July 28, 2015

Rings and bubbles from a dying star

Jumping Through Hoops August 5, 2010

A Dose of Magnesium January 20, 2010