Active lava flows at volcanoes might move several feet per minute when hot. As the lava flows cool, they slow down to a rate of only a few feet per day. Geologists in Hawaii keep a close watch on active lava flows. They use handheld global positioning system (GPS) receivers to map lava flows as accurately as possible.
Libra, Aquarius, Gemini. Religion & Spirituality. Air is the element of the mind, and airy types know that everything begins with an idea. These are the idea people, who breeze in and offer a fresh perspective on the situation at hand.
May 21 - June 21. The glyph for Gemini represents the heavenly twins and its ruling planet is Mercury. Gemini is the third sign of the zodiac a member of the the horns of the ram. Aries is the first sign of the zodiac, a mutable sign, masculine and of the air element. The Sun enters the sign of Gemini around 21 May and exits around 21 June. Symbolically the written symbol of Gemini corresponds with the Roman numeral for 2 which indicates the essential duality of the sign.