Science Source Feb 2010
EN_90286391_0217
Comet Ikeya-Seki, named after Kaoru Ikeya and Tsutomu Seki who discovered the comet independently. A comet is a body of ice and dust, which moves around the Sun on a long, elliptical orbit. As it nears the Sun its surface is heated and some of the ice evaporates. The released gas is ionized by ultraviolet light from the Sun & begins to glow. The gas & dust can form two separate tails; a gas tail and a dust tail. A gas tail consists of ionized gas, swept outwards by the solar wind, whereas a dust tail is composed of grains of dust, blown outwards by solar radiation pressure.
2010-02-13
EAST NEWS
Science Source
Science Source
4c5275
1,77MB
31cm x 31cm przy 300dpi
1965, AFTER, AND, AROUND, AS, ASTRONOMY, BEGINS, BLOWN, BODY, BRIGHT, BY, CAN, COMET, COMETS, COMPOSED, CONSISTS, DISCOVERED, DUST, ELLIPTICAL, EVAPORATES, EXPLORATION, FORM, FROM, GAS, GLOW, GRAINS, HEATED, ICE, IKEYA, IKEYA-SEKI, INDEPENDENTLY, IONIZED, IS, IT, ITS, KAORU, LIGHT, LONG, MOVES, NAMED, NEARS, NIGHT, OF, ON, ORBIT, OUTWARDS, PRESSURE, RADIATION, RELEASED, S1, SCIENCE, SEKI, SEPARATE, SKY, SOLAR, SOME, SOURCE, SPACE, SUN, SURFACE, SWEPT, SYSTEM, TAIL, TAILS, TELESCOPE, THE, TO, TSUTOMU, TWO, ULTRAVIOLET, VIII, WHEREAS, WHICH, WHO, WIND,