Rumvejr
Rumvejr er konceptet af skiftende miljøbestemte forhold i det ydre rum. Det adskiller sig fra konceptet omkring vejr inden for en planets atmosfære og påvirkes af fænomener, som involverer den omsluttende plasma, magnetiske felter, stråling og andre fysiske stoffer i rummet. "Rumvejr" betyder ofte implicit vejret i det ydre rum tæt på Jorden, men det er også studeret interplanetarisk (og somme tider i det interstellare rum).[1]
Referencer
- ^ Rumvejr: Et forskningsperspektiv Arkiveret 26. marts 2009 hos Wayback Machine, National Academy of Science, 1997. "Rumvejr beskriver forhold i rummet, som påvirker Jorden og dets teknologiske systemer. Vores rumvejr er en konsekvens af solens virken, Jordens magnetfelt og vores placering i solsystemet."
Eksterne henvisninger
- 2. feb 2013, ing.dk: Forskere: Rumvejret styrer fødevarepriserne (Webside ikke længere tilgængelig) (under visse betingelse)
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Aurora-SpaceShuttle-EO.jpg
The Aurora Australis as seen from the Space Shuttle Discovery on STS-39. The payload bay and tail of Discovery can be seen on the left hand side of the picture. Auroras are caused when high-energy electrons pour down from the Earth’s magnetosphere and collide with atoms. Red aurora occurs from 200 km to as high as 500 km altitude and is caused by the emission of 6300 Angstrom wavelength light from oxygen atoms. Green aurora occurs from about 100 km to 250 km altitude and is caused by the emission of 5577 Angstrom wavelength light from oxygen atoms. The light is emitted when the atoms return to their original unexcited state.
The Aurora Australis as seen from the Space Shuttle Discovery on STS-39. The payload bay and tail of Discovery can be seen on the left hand side of the picture. Auroras are caused when high-energy electrons pour down from the Earth’s magnetosphere and collide with atoms. Red aurora occurs from 200 km to as high as 500 km altitude and is caused by the emission of 6300 Angstrom wavelength light from oxygen atoms. Green aurora occurs from about 100 km to 250 km altitude and is caused by the emission of 5577 Angstrom wavelength light from oxygen atoms. The light is emitted when the atoms return to their original unexcited state.
