Aureola crown, modified by an equally simple idea of the emanation of light from the head of a superior being, or by the meteorological phenomenon of a halo. The probability is that all later associations with the symbol refer back to an early astrological origin (compare Mithras), the person so glorified being identified with the sun and represented in the sun's image; so the aureole is the "Hvareno" of Mazdaism. From this early astrological use, the form of "glory" or "nimbus" has been adapted or inherited under new beliefs. A "mandorla" is a vesica piscis shaped aureola which surrounds the figures
Nimbus program in the seasonal ice that encases Antarctica each winter. Located in the Weddell Sea, each year the polynya vanished with the summer melt, but returned the following year. The open patch of water may have influenced ocean temperatures as far down as 2,500 meters and influenced ocean circulation over a wide area. The Weddell Sea Polynya has not been observed since the event witnessed by the Nimbus satellites in the mid-70s. Nimbus satellites (beginning with Nimbus 3 in 1969) blazed the trail into the modern GPS era with operational search and rescue and data collection systems. The satellites tested the