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
Out of Gas: The End of the Age of Oil Out of Gas: The End of the Age of Oil Out of Gas: The End of the Age of Oil is a 2004 book written by David Goodstein. It describes peak oil and the future of civilization. The book gives the scientific view that the age of petroleum is coming to an end, and the future is dangerously insecure. Oil demand will shortly exceed the production capacity of even the largest suppliers. The book describes how the world economy is moving towards an uneasy transition. In this book, Goodstein rejected the notion that after peak occurs new alternative sources of