A star like the Sun is at equilibrium - gravity tends to pull it inwards, and radiation pressure from the nuclear reactions tends to expand it outwards. In other words, the gravitational collapse ...

We look ahead to 2025 as the sun ramps up its activity, driven by the peak of the current solar cycle. 2024 was a busy year for solar news, but what can we expect from 2025? In April, a total ...

So, as each solar cycle progresses due to the migration of the Sun’s magnetic field, solar output increases. Fractional though these changes are, they have obvious implications for life on Earth.