NASAtelevision 2011.1.10---开普勒飞船发现系外行星

NASAtelevision 2011.1.10---开普勒飞船发现系外行星
NASA's Kepler Spacecraft Discovers Its First Rocky Exoplanet
NASA's Kepler spacecraft has discovered Kepler-10b, its first confirmed rocky planet and the smallest transiting exoplanet discovered to date. Kepler-10b is only 1.4 times the size of Earth and has an average density of 8.8 grams per cubic centimeter, similar to that of an iron dumbbell. The planet orbits its star in only 0.84 days and is not in the habitable zone, where liquid water could exist.
美国宇航局的开普勒飞船发现系外行星，其第一洛矶
美国宇航局的开普勒飞船发现开普勒-10B的，它的第一个确认的岩石行星，最小的太阳系外行星过境迄今为止发现。开普勒-10B的只有1.4倍，地球的大小和拥有8.8克每立方厘米，类似的铁哑铃的平均密度。这颗行星的轨道中，只有0.84天它的恒星，并在可居住区，那里可能存在液态水没有。