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Thermonuclear fusion

Astronomy Thermal radiationThermosphere

Thermonuclear Fusion
the combination of atomic nuclei at high temperatures to form more massive nuclei with the simultaneous release of energy. Thermonuclear fusion is the power source at the core of the Sun.

 


controlled fusion (Plasma Physics and Fusion Energy Glossary) Controlled Thermonuclear Fusion: The process in which light nuclei, heated to a high temperature in a confined region, undergo fusion reactions under controlled conditions, ...

Objects with true masses below the limiting mass for thermonuclear fusion of deuterium (currently calculated to be 13 times the mass of Jupiter for objects with the same isotopic abundance as the Sun[31]) that orbit stars or stellar remnants are ...

A failed star which is not massive enough to ignite thermonuclear fusion in the core. According to stellar models, the maximum mass a brown dwarf can have is .

The most distant galaxies contain much less iron, nickel, and other products of thermonuclear fusion that our own Galaxy. Looking farther out, the galaxies eventually disappear from sight as their light is Doppler-shifted into the infrared.

To create the conditions for such "thermonuclear fusion," stars must be massive. The Sun has the mass of 333,000 Earths. Stars can range up to about 100 times the mass of the Sun (at which point nature stops making them) down to around 7.

The Sun and other stars shine by converting superheated hydrogen in their centers into helium in a process called thermonuclear fusion.

075 Solar mass limit for core thermonuclear fusion of hydrogen. The object radiates emits only 0.00015 percent as much visible light as Sol and so look dimmer than the full Moon from Earth if it replaced the Sun in the Solar System Ken Croswell, 2005.

For at least a portion of its life, a star shines due to thermonuclear fusion of hydrogen in its core releasing energy that traverses the star's interior and then radiates into outer space.

A dense, glowing ball of hydrogen, helium, and trace quantities of heavier elements that shines with energy released from a hydrogen thermonuclear fusion reaction in the center, or core. Our Sun is an example of a star.

Thermonuclear fusion powers stars. Main sequence stars are dominated by hydrogen burning fusion reactions. In red giants, He is converted into C by the triple-alpha process.

If the nuclei are part of a plasma near thermal equilibrium, one speaks of thermonuclear fusion.

definition of planet by the International Astronomical Union , is a celestial body orbiting a star or Stellar evolution#Stellar remnants that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, ...

The hot, compact remains of a low-mass star like our Sun that has exhausted its sources of fuel for thermonuclear fusion. White dwarf stars are generally about the size of the Earth.
Wide Field Camera 3 (WFC3) ...

Inventions inspired in part by Alfvén's contributions include:: Particle beam accelerators: Controlled thermonuclear fusion: Hypersonic flight: Rocket propulsion: Reentry braking of space vehicles ...

Planet
A celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighboring region of planetesimals.

At these temperatures, energy is produced by thermonuclear fusion (see nuclear energy), in which two or more nuclei are fused to form a single heavier nucleus.

See also: Nuclear fusion, Fusion, Mass, Sun, Planet

Astronomy Thermal radiationThermosphere

 
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