• 41亿年前地球上开始出现生命体

    15-10-21 UCLA geochemists have found evidence that life likely existed on Earth at least 4.1 billion years ago -- 300 million years earlier than previous research suggested. The discovery indicates that life may have begun shortly after the planet formed 4.5...

  • 地球内核于10-15亿年前形成

    15-10-12 There have been many estimates for when the earth's inner core was formed, but scientists from the University of Liverpool have used new data which indicates that the Earth's inner core was formed 1 - 1.5 billion years ago as it froze from the surro...

  • habitable zone 宜居带

    15-08-13 NASA said that its Kepler spacecraft has spotted Earth's bigger, older cousin: the first nearly Earth-size planet to be found in the habitable zone of a star similar to our own. 美国太空总署(NASA)宣布,开普勒太空望远镜发现了地球的大表哥,这也是首...

  • 地球磁场的年龄远大于预期值

    15-08-04 Since 2010, the best estimate of the age of Earth's magnetic field has been 3.45 billion years. But now a researcher responsible for that finding has new data showing the magnetic field is far older. John Tarduno, a geophysicist at the University of...

  • McGuire's Twenty-Five Minutes

    15-07-22 McGuire's Twenty-Five Minutes Benjamin S. Grossberg ... as he was executed with a combination of drugs never before tried in the U.S. A portable dark. Maybe a cave inside a syringe, that mind wanders. A dark of deep, deep in the earth, or well wide...

  • History

    15-06-09 History Robert Morgan Where cloudbursts tore a gash in the shoulder of the ridge, uprooting ferns and hedge, a maple and an ash, a honeysuckle vine and wires of gold ground pine, the slide exposed a vein of mica, groundhog den, a zone of luminous cl...

  • 2015十大新物种

    15-05-22 A cartwheeling spider, a bird-like dinosaur and a fish that wriggles around on the sea floor to create a circular nesting site are among the species identified by the SUNY College of Environmental Science and Forestry (ESF) as the Top 10 New Species...

  • 月球形成的新观点

    15-04-09 Within the first 150 million years after our solar system formed, a giant body roughly the size of Mars struck and merged with Earth, blasting a huge cloud of rock and debris into space. This cloud would eventually coalesce and form the moon. For al...

  • At the edge of the sea

    15-03-18 The shore is an ancient world, for as long as there has been an earth and se a there has been this place of the meeting of land and water. Yet it is a world that keeps alive the sense of continuing creation and of the relentless drive of life. Each...

  • 铁蒸汽暗藏地月关系的成因

    15-03-03 Recreating the violent conditions of Earth's formation, scientists are learning more about how iron vaporizes and how this iron rain affected the formation of Earth and Moon. The study is published March 2 in Nature Geoscience. We care about when ir...