International Ultraviolet Explorer was considered the most successful astronomical satellite ever. The human eye can perceive light with wavelengths between roughly 350 (violet) and 700 (red) nanometres. Ultraviolet light has wavelengths between roughly 10 nm and 350 nm. UV light can be harmful to human beings, and is strongly absorbed by the ozone layer. This makes it impossible to observe UV emission from astronomical objects from the ground. Many types of object emit copious quantities of UV radiation, though: the hottest and most massive stars in the universe can have surface temperatures high enough that the vast majority of their light is emitted
Black Out the Sun (song) the Sun" is a perfect match for the atmospheric quality of the pop ballad. Standing on a deserted beach and surrounded by grim reapers, Hayes seems isolated, lost and confused. The dark and lifeless wasteland pictured in the video is the perfect backdrop for Hayes' state of mind in the song." Black Out the Sun (song) "Black Out the Sun" is the third overall single from British-based Australian singer-songwriter Darren Hayes' fourth studio album, "Secret Codes and Battleships", released on 2 October 2011. The song debuted at #101 on the UK Singles Chart. The song received its first radio airplay