In a remote place of the island, far from the little environmental and luminous pollution that there is, an observatory-resort was born, dedicated to lovers of the winter skies show to be enjoyed in relax
About Northern lights:
- Sound: Sometimes, when an aurora appears, you can hear sounds that resemble hisses. These are electrophonic sounds, a phenomenon that can occur, although much more rarely, even during the appearance of bolides. The origin of these sounds is not yet clear: it is believed that they are due to perturbations of the local terrestrial magnetic field, caused by an increased ionization of the overlying atmosphere.The polar auroras are often also accompanied by radio emissions in the VLF band, known as “aural chorus”. Since the frequencies of these signals are in the order of kHz, so they are audio frequencies, they can be converted into audio using a special receiver.
- Origin: The origin of the aurora is found to 149 million km from the Earth, that is on the Sun. The appearance of a great group of sunspots is the first sign of an expulsive activity of intense coronal mass. The energetic particles emitted by the Sun travel in space forming the solar wind. This moves through the interplanetary space (and therefore towards the Earth, which can reach in 50 hours) with speeds typically ranging between 400 and 800 km / s, dragging with it part of the solar magnetic field (interplanetary magnetic field). The solar wind, interacting with the earth’s magnetic field, also called magnetosphere, distorts it, creating a sort of magnetic “bubble”, similar in shape to a comet.