Since 1994, various countries have celebrated Sun Day on May 3, sometimes called World Sun Day or International Sun Day.
Sun — is the closest star to Earth, all others are immeasurably further from us. For example, the closest Proxima star to our planet from the Alpha Centauri system is located at a distance of 4.22 light years from the Sun.
For the Earth, the Sun — is a powerful source of cosmic energy. It provides the light and heat necessary for flora and fauna, and forms the most important properties of the Earth's atmosphere.
In general, the Sun determines the ecology of the planet. Without it, there would be no air necessary for life, — the air would turn into a liquid nitrogen ocean around frozen waters and icy land. For us earthlings, the most important feature of the Sun is that our planet arose near it, and life appeared on it.
The sun, wind, sea waves and biomass are energy raw materials that constantly surround us and are easy to use. It does not need to be extracted from the ground. It does not lead to the formation of radioactive waste, and does not produce toxic waste at all. It's renewable energy.
Sun — our star (Photo: Triff, licensed from Shutterstock.com)
To draw attention to the possibilities of using renewable energy sources and remind that the Sun is vital for life on Earth, the European Chapter of the International Solar Energy Society (IOSE, ISES-Europe) and organizes on a voluntary basis the annual celebration of Sun Day on May 3.
Enthusiasts and professionals, public organizations and firms from different countries organize events and promotions related to demonstrating the capabilities of solar energy.