Next two satellites are prepared for launch

The next two satellites in the Galileo European navigation have been subjected to an aggressive vacuum conditions and extreme temperatures in preparation for launch, scheduled for September 28. The fourth satellite Galileo completed earlier this month 20 days of thermal vacuum tests on the location of Thales Alenia Space on the outskirts of Rome, Italy. The third had passed the same test a month earlier.

The Sun Satellites by Observing

Astronomers still have no idea why they occur in more or less regular cycles of 11 years. There is, however, a broad scientific consensus that the entire solar activity, which essentially consists of various forms of explosions and bursts of sun-grown when the number of sunspots, and decreases when this number decreases.

Most of the explosions of sunspots belong to a common variety known as Coronal Mass Ejection (CME). CMEs are clouds of gas at high temperatures leaving the Sun and Interplanetary Space cross, creating shock waves that accelerate different particles, mostly protons, in front of them and resulting in what is known as Proton Storm.