Aurora effect is known as the aurora borealis or the northern lights. The former term was coined by Galileo in 1619, from the Roman goddess of the dawn and the Greek name for the north wind. The southern counterpart, the aurora australis or the southern lights, has features almost identical to the aurora borealis and changes simultaneously with changes in the northern auroral zone. The Aurora Australis is visible from high southern latitudes in Antarctica, Chile, Argentina, New Zealand, and Australia. A geomagnetic storm causes the auroral ovals (north and south) to expand, and bring the aurora to lower latitudes. The
Trientalis borealis Illinois and Tennessee. Trientalis borealis Trientalis borealis, synonym Lysimachia borealis, also known as the starflower, is a North American woodland perennial that blooms between May and June. Starflowers are creeping rhizomes with 8 inch (20 cm) vertical stalks. Each stalk has a whorl of 5-9 lanceolate leaves at its tip, with one or two white flowers on smaller stalks extending from the center of the whorl. The flowers are about 0.5 inches (11 mm) across and consist of five to nine petals that form a star-like shape. "Trientalis borealis" is listed as endangered by Georgia and Kentucky and is listed