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The following is a list of notable month-long observances, recurrent months that are used by various governments, groups and organizations to raise awareness of an issue, commemorate a group or event, or celebrate something.
Mosquito Awareness Week: June 22–28 [187] Plastic Free July [188] July 1–31 National Clean Beaches Week [citation needed] July 1–7 Van Mohatsav Saptah (Forest Festival Week) [citation needed] Conservation Week: World Water Week: August 26–31 European Mobility Week: September 16–22 Bike Week: Second week in June Recycle Week [189] June ...
After 5.7 years its orbit had decayed to about 175 nautical miles (324 km) and it was likely to burn up on reentry in a little over a month. [6] [9]: 15 It was finally recovered by Columbia on mission STS-32 on January 12, 1990. [19] Columbia approached LDEF in such a way as to minimize possible contamination to LDEF from thruster exhaust. [20]
Average UV at noon 1996-2002 (European Space Agency) The ultraviolet index, or UV index, is an international standard measurement of the strength of the sunburn-producing ultraviolet (UV) radiation at a particular place and time. It is primarily used in daily and hourly forecasts aimed at the general public.
On the positive side, UV exposure enables the synthesis of vitamin D 3, which is essential for bone health [1] and potentially plays a role in inhibiting certain cancers. [ 2 ] [ 3 ] While vitamin D can also be obtained through dietary supplements, [ 4 ] UV exposure offers benefits such as enhanced subdermal nitric oxide production and improved ...
The Sun's UV output is divided into UV-A and UV-B: solar UV-A flux is 100 times that of UV-B, but the erythema response is 1,000 times higher for UV-B. [citation needed] This exposure can increase at higher altitudes and when reflected by snow, ice, or sand. The UV-B flux is 2–4 times greater during the middle 4–6 hours of the day, and is ...
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International Ultraviolet Explorer (IUE or Explorer 57, formerly SAS-D), [2] was the first space observatory primarily designed to take ultraviolet (UV) electromagnetic spectrum. The satellite was a collaborative project between NASA , the United Kingdom 's Science and Engineering Research Council (SERC, formerly UKSRC) and the European Space ...