After a break of 4 years, on June 23rd and 24th the Teide Observatory will be celebrating its Open Days. This activity is free; its aim is to bring some knowledge of astronomy to the general public, including those people who happen to be visiting the island on those two days. To make a visit it is essential to register using a special form before June 16th. In this year’s edition the activity will be guided, and 9 points of interest will be visited, one every 20 minutes, so that the complete visit should take 3 hours, from 10:00 to 13:00 for the morning session, and from 16:00 to 19:00 for

An international scientific team, including researchers from the Instituto de Astrofísica de Canarias (IAC) and the University of La Laguna (ULL), have discovered magnetic waves in sunspots with such a high energy flux that they could keep the Sun's atmosphere at millions of degrees. The finding adds a new missing piece to the puzzle of why the Sun's outer layers are hotter than its surface despite being further away from the source of heat. The results are published in the journal Nature Astronomy. The Sun is powered by nuclear fusion of hydrogen at the core, where the temperature reaches

The first test images from its two instruments show its potential for achieving its scientific goals. These images will be used to check the instruments and to see how Euclid can be adjusted and fine tuned for best performance. The European Space Agency (ESA)’s Euclid mission, in which the Instituto de Astrofísica de Canarias (IAC) is participating, will produce the biggest and most accurate 3D map of the universe. Euclid’s two instruments VIS (VISible instrument) and NISP (Near Infrared Spectrometer and Photometer) have taken their first test images. The results indicated that this space