The Great Conjunction is the rapprochement between Saturn and Jupiter which takes place every 20 years. The 2020 edition of December 21 was exceptional with a separation of only 0.1° between the two giant planets. They are photographed here on the island of Tenerife in the Canary Islands at 2000m altitude, on the slopes of the Teide volcano. The passage of the planets through the pine thorns diffracts their light, giving the illusion of a solar eclipse.