Because thats the part of its life cycle it is now in.
Yes, nuclear fusion
No. The sun is powered by nuclear fusion.
thermonuclear fusion
The sun is powered by nuclear fusion, in which hydrogen atoms combine to form helium, releasing a tremendous amount of energy in the process. This energy is what provides the light and heat that we receive from the sun.
Stars are powered by nuclear fusion
Stars are not powered by combustion; they are powered by nuclear fusion, which is a fundamentally different and far more energetic process.
The sun is powered by nuclear fusion, and the resulting hot material in the sun and specifically on its surface radiates visible light along with other frequencies.
Fusion, as it is joining the nuclei of smalled atoms together to form another atom and a spare neutron and releases energy. In a main sequence star, such as our sun, it will fuse together the nuclei of the isotopes of hydrogen (deuterium and tritium) to form helium.
The Sun is powered by nuclear fusion which requires extremely high temperatures to happen. Hydrogen is fused into helium releasing incredible amounts of energy which is counteracted by gravity.
Yes, the sun is a nuclear fusion reactor.
The sun is not burning like a true fire. It is powered instead by nuclear fusion, which uses hydrogen.
None.