The standard solar model (SSM) is a mathematical model of the Sun as a spherical ball of gas (in varying states of ionisation, with the hydrogen in the...

physics The Standard Solar Model of solar astrophysics The Lambda-CDM model, the standard model of big bang cosmology Standard model (cryptography) Intended...

the center to about 0.2 of the solar radius (139,000 km; 86,000 mi). It is the hottest part of the Sun and of the Solar System. It has a density of 150...

that it required a modification of the accepted Standard Model. They first pointed at the solar model for adjustment, which was ruled out. Today it is...

the solar neutrinos arriving at Earth. Bahcall, using a solar model he developed, came to the conclusion that the most effective way to study solar neutrinos...

could not be caused by flaws in stellar models and must instead be a problem of particle physics. The so-called solar neutrino problem was ultimately resolved...

sequence stars below about 0.3 solar masses are entirely convective, meaning they do not have a radiative zone. From 0.3 to 1.2 solar masses, the region around...

This is the minimal value allowed by solar and terrestrial neutrino oscillation experiments. from the Standard Model of particle physics Calculated from...

The Sun is the star at the center of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion...

and one half the number predicted by the Standard Solar Model. This discrepancy, which became known as the solar neutrino problem, remained unresolved for...