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 (album) the love that the band has for music and themselves. With over 16 years together and 9 recorded albums to their name, Sevendust has completed their musical journey to the top with "Black Out the Sun"." The album debuted at No. 18 on the "Billboard" 200, and No. 5 on the Top Rock Albums chart, selling around 27,000 copies in its first week of release. Sevendust Production and design Black Out the Sun (album) Black Out the Sun is the ninth studio album by American metal band Sevendust released on March 26, 2013. "Black Out the Sun" marks the band's