Smithsonian Magazine on MSN20h
This Stunning New Atlas Explores Humanity’s Ancient Relationship With Space and the Universe
Written by the former chief historian of NASA, the book examines the evolution of our cosmic understanding—from early civilizations to the present day ...
WeatherOnline19h
UV index
The strength of the sun's ultraviolet (UV) radiation is expressed as a Solar UV Index or Sun Index.The UV Index does not exceed 8 in the UK (8 is rare; 7 may occur on exceptional days, mostly in the ...