The mission of the SDO (Solar Dynamics Observatory) is to monitor solar activity in order to anticipate the possible impact of the different solar flares that form the activity of our star.
The observatory thus shares with us today one of these most impressive eruptions, which occurred on December 19. The SDO is able to observe the sun continuously, since it is an instrument placed in orbit around the Earth.
Solar flares are releases of wave energy that form plasma projections. During these eruptions, radiation and solar particles are projected into space. These waves disturb our magnetosphere and sometimes damage or disturb some electrical devices, from telecommunications satellites to transformers in power plants.
Recently, a team of CNRS researchers has highlighted an observation technique used to predict solar storms. It would thus be a question of observing the formation of magnetic cord which announces these eruptions. In the idea, this would allow the most sensitive systems on Earth to be protected. But at present, it is impossible to determine in which direction the projections of coronary mass are directed. It is therefore impossible to confirm with certainty that a solar flare will cause disturbances on Earth.
During these eruptions, the solar particles take 30 minutes to reach us (against 8 minutes for sunlight), the projections of plasma bubbles take between 3 and 4 days to hit us.