Space cradle

日期:2019-03-06 11:18:10 作者:贲枇现 阅读:

LIQUID water may have been around since the dawn of the Solar System, raising the possibility that life could have evolved before the Earth even existed. James Whitby and his colleagues at the University of Manchester found salt crystals with water bubbles trapped inside in a meteorite called Zag. Measuring the relative amounts of xenon and iodine isotopes in the crystals revealed that they could be some of the oldest materials ever found in the Solar System, dating from just after its birth 4.57 billion years ago, they say in Science (vol 288,