Learn all the constellations and brightest stars from a gold medal winner of the International Astronomy Olympiad competition! Features: 123 levels teach, train and test your knowledge of all 88 constellations defined by the International Astronomical Union. 180 levels teach, train and test your knowledge of 150+ brightest stars of the sky. Learn the constellations … Continue reading Sky Academy – Learn to recognize all the constellations and the brightest stars in the sky