- YPOP
- abbr.Yohkoh Public Outreach Project
Dictionary of abbreviations. 2012.
Dictionary of abbreviations. 2012.
Sundial — A sundial is a device that measures time by the position of the Sun. In common designs such as the horizontal sundial, the sun casts a shadow from its style (a thin rod or a sharp, straight edge) onto a flat surface marked with lines indicating… … Wikipedia
Solar cycle — The solar cycle, or the solar magnetic activity cycle, is the main source of periodic variation of all solar phenomena driving variations in space weather. [ [http://www7.nationalacademies.org/ssb/SSB Space weather97.pdf Space Weather: A Research … Wikipedia
Solar prominence — with images of Jupiter and Earth for size comparison. Solar prominence video clip (high resolution) A prominence is a large, bright feature extending outward from the Sun … Wikipedia
Yohkoh — Caractéristiques Organisation Agence d exploration aérospatiale japonaise Domaine Observation solaire Masse 390 kg Lancement 30 août 1991 à 02:30 UTC Lanceur M 3SII Fin de mi … Wikipédia en Français