• 太空生物学家提出火星生命探测器设想

    12-04-25 A Washington State University astrobiologist is leading a group of 20 scientists in calling for a mission to Mars with a strong and comprehensive life detection component. At the heart of their proposal is a small fleet of sensor packages that can p...

  • “时间机器”将用于研究早期宇宙

    12-04-12 A new scientific instrument, a time machine of sorts, built by UCLA astronomers and colleagues, will allow scientists to study the earliest galaxies in the universe, which could never be studied before. The five-ton instrument, the most advanced and...

  • 逸走行星以小比例光速运动

    12-03-26 Seven years ago, astronomers boggled when they found the first runaway star flying out of our galaxy at a speed of 1.5 million miles per hour. The discovery intrigued theorists, who wondered: If a star can get tossed outward at such an extreme veloc...

  • 关于地幔的新发现

    12-03-23 Scientists have long speculated about why there is a large change in the strength of rocks that lie at the boundary between two layers immediately under Earth's crust: the lithosphere(岩石圈) and underlying asthenosphere. Understanding this bounda...

  • 银河系黑洞正吞食小行星

    12-02-13 The giant black hole at the center of the Milky Way may be vaporizing and devouring(吞食,毁灭) asteroids, which could explain the frequent flares observed, according to astronomers using data from NASA's Chandra X-ray Observatory. For several yea...

  • 每个恒星都有行星围绕

    12-01-12 Every star twinkling in the night sky plays host to at least one planet, a new study suggests. 一项新研究显示,夜空中闪烁的每个恒星都至少拥有一个行星。 That implies there are some 10 billion Earth-sized planets in our galaxy. Using a technique calle...

  • 宇宙中发现类地行星Kepler 22-b

    11-12-06 Astronomers have confirmed the existence of an Earth-like planet in the habitable zone around a star not unlike our own. 天文学家证实,宇宙中某颗恒星适居区内有一颗类地行星。 The planet lies about 15% closer to its star than the Earth is to the Sun T...

  • 银河系曾“排斥”一颗巨行星

    11-11-13 Just as an expert chess player sacrifices a piece to protect the queen, the solar system may have given up a giant planet and spared Earth, according to an article recently published in The Astrophysical Journal Letters. We have all sorts of clues a...

  • 新设想:通过城市灯光寻找外星生命

    11-11-04 In the search for extraterrestrial intelligence, astronomers have hunted for radio signals and ultra-short laser pulses. In a new paper, Avi Loeb (Harvard-Smithsonian Center for Astrophysics) and Edwin Turner (Princeton University) suggest a new tec...

  • 金星表面天气状况恶劣

    11-09-29 At first glance, a weather forecaster for Venus would have either a really easy or a really boring job, depending on your point of view. The climate on Venus is widely known to be unpleasant -- at the surface, the planet roasts at more than 800 degr...