官方APP下载:英语学习播客(支持苹果手机、安卓手机)
创办于2003年
UNSV记不住?那就记中文谐音“忧安思危”吧!
  Slow and Steady Wins the Race!
UNSV英语学习频道 - Slow and steady wins the race!
公众微信服务号(英语全能特训)
英语全能特训(微信公众服务号)
UNSV英语学习频道淘宝网店
客服短信:18913948480
客服邮箱:web@unsv.com
初级VIP会员
全站英语学习资料下载。
¥98元/12个月

NASA: Strong Evidence of Liquid Water on Mars

作者:Mario Ritter 发布日期:9-29-2015

These dark, narrow, 100-meter-long streaks called "recurring slope lineae" flowing downhill on Mars are thought to have been formed by flowing water. The image, taken with a special camera, uses false colors to show detail better.
These dark, narrow, 100-meter-long streaks called "recurring slope lineae" flowing downhill on Mars are thought to have been formed by flowing water. The image, taken with a special camera, uses false colors to show detail better.

Scientists have found strong evidence of salt water on the planet Mars, the U.S. space agency NASA announced Monday.

NASA has found lines of 'hydrated' salt minerals on Mars. Scientists say these minerals would require liquid water to be created. And where there's liquid water, they say, there could be life.

Jim Green is the director of planetary science at NASA Headquarters. He said during a news conference that 'today, we are revolutionizing our understanding of this planet.'

Doug McCuistion is the former head of NASA's Mars program. He told the Boston Herald that "if they are announcing that they have found easily accessible, freely flowing liquid water under the surface ... that has massive implications both for the potential for life on that planet and sustainability of humans.'

NASA has found evidence of water on Mars in the past. In March, NASA said there was once more water on Mars than in Earth's Arctic Ocean. They say more than four billion years ago, Mars was covered with water 137 meters deep. But nearly all of it has since evaporated into space.

I'm Mario Ritter.

Jonathan Evans adapted this story from a VOA News report. Kathleen Struck was the editor.

Words in This Story

hydrated - adj. - relating to something formed when water combines with another substance

implication - n. a possible future effect or result

版权所有©2003-2019 南京通享科技有限公司,保留所有权利。未经书面许可,严禁转载本站内容,违者追究法律责任。 互联网经营ICP证:苏B2-20120186
网站备案:苏公网安备 32010202011039号苏ICP备05000269号-1中国工业和信息化部网站备案查询
广播台