International holidays - Sun-Earth Day

Planetary transits, eclipses, solar flares, magnetic storms and other phenomena affect the living and inanimate nature of the Earth. The spring equinox is the most important astronomical phenomenon, therefore, on March 20, Earth Day is celebrated annually at the initiative of the UN. Natural and artificial events of varying degrees of importance constantly occur in space. Observations of them allow us to better study the upper layers of the atmosphere, the heliosphere of the star and interplanetary space. In honor of scientific research of two celestial bodies, an unusual Sun-Earth Day was established. Sun-Earth Day was first held in 2000. The holiday appeared on the calendar on the initiative of NASA and the European Space Agency. The purpose of the celebration is to provide as much information as possible about the events and processes occurring in space that are associated with the Earth and the Sun. In honor of the holiday, which has a floating date, programs dedicated to this topic are broadcast on television, training and educational events are held, open days in museums, etc. Sun-Earth Day is usually timed to coincide with some major event. Thus, in 2005, the theme for its holding was “Ancient observatories: eternal knowledge.” Many of these ancient structures have been preserved in South America. Scientists from the USA, Mexico, Ecuador and other countries spoke about the exploration of the Moon and Sun, stars and planets by ancient civilizations. In honor of the holiday, discussions, online broadcasts of lectures and excursions to the observatory were held. In 2015, Sun-Earth Day was celebrated on March 12 in honor of the launch of the Magnetospheric Multiscale Mission (MMS). The launch vehicle was launched from Cape Canaveral with the goal of tetrahedral formation of a group of satellites in orbit. The mission helped scientists study the turbulence of the Earth's magnetosphere, study the possibility of accelerating the movement of electrons in the planet's magnetic field and the interaction of the solar wind with it. NASA has approved a mission dedicated to studying the nature and characteristics of turbulence in space plasma. The next program, Multi-slit Solar Explorer, will study the heating of the solar corona using breakthrough spectroscopy techniques. Auroral Reconstruction CubeSwarm - Earth's magnetosphere, space weather dynamics, particles of which pass through the ionosphere and thermosphere. The Solaris mission is designed to reveal the mystery of the Sun's poles. Their image is planned to be obtained in 2025 using the ESA/NASA Solar Orbiter technical device. Observing the constantly changing space environment helps people better understand the processes occurring in the Universe. Research makes it possible to obtain important information to ensure the safety of astronauts, satellites and other equipment launched into Earth orbit. Sun-Earth Day is dedicated to these and other aspects of the work of NASA scientists.