• Cyclic amplification of magnetic fields in the solar interior (solar cycle)
• Transport of magnetic fields through the solar convection zone (magnetoconvection)
• Emergence of magnetic fields into the solar atmosphere (flux emergence)
• Formation of magnetic structures in the solar atmosphere (sunspots, active regions, flux ropes, prominences/filaments)
• Heating and explosion of magnetic structures in the solar atmosphere (solar atmospheric heating, sigmoids, solar flares, jets)
• Ejection of magnetic fields toward the interplanetary space (solar winds, coronal mass ejections)
The solar activity affects the Earth in both time scales. In the short time scale, flares and coronal mass ejections produce high-energy particles and magnetized plasma blobs traveling through the interplanetary space, which potentially impact on terrestrial environment by damaging artificial satellites and ground-based electric facilities. This is the subject of space weather. On the other hand, the long-term variation of the solar activity may influence the climate of the Earth (space climate). This indicates that the physical state of the Earth where we are living depends on the solar activity, and it is therefore important to have a view of the Earth inside the Sun, or the Earth in solar fields (solar gravitational field, solar radiative field, and solar magnetic field).