... Space Research Institute . ... Space Plasma Physics is one of the main lines of theoretical and experimental investigations performed at the Space Research Institute (IKI). ... The processes of the transformation of some types of energy into other, which constitute the essence of active phenomena on the Sun and in the close vicinity (magnetospheres) of the planets, including the Earth, are of plasma nature. ... Data of previous solar terrestrial missions: Prognoz-7,-8,-9,-10 , Arcad , Active, Apex. ...

Educator's Guide to Impact Craters . ... Just about all craters have deep central depressions, raised rims, and a blanket of ejected material surrounding them. ... Look for classical cratering features: basin, raised rim, ejecta blanket (material excavated from the crater and dumped around it, visible as white flour on the colored powder), and rays (material shot out at high velocity forming lines pointing directly away from the impact site). ... The material lies like a blanket around the crater. ...