Ultraviolet


Ultraviolet.     This mosaic of M31 merges 330 individual images taken by the Ultraviolet/Optical Telescope aboard NASA’s Swift spacecraft. It is the highest-resolution image of the galaxy ever recorded in the ultraviolet. Also known as the Andromeda Galaxy, M31 is more than 220,000 light-years across and lies 2.5 million light-years away. On a clear, […]

Space tourism could have big impact on climate


Space tourism could have big impact on climate Space tourism could have major consequences for Earth’s climate. New computer simulations suggest soot emitted by the rockets could raise temperatures at the poles, significantly reducing seasonal ice cover there. In the next few years, space tourism companies hope to start routinely flying passengers on suborbital space […]