At a meeting today, researchers will consider a new world kilogram standard, and other units. John Matson reports.
在今天的一个会议上，研究人员们将考虑一个新的世界通用的千克的标准，当然，还有其他的一些单位。
Comet Hartley 2 has the same deuterium-to-hydrogen ratio as ocean water, lending support to the idea that Earth's water was delivered by comets. John Matson reports.
哈特利2号彗星拥有和地球海水相同的氘氢比例，有力支持了地球上的水源于彗星(的观点)。来自约翰·马特森的报道。
But it was her friendliness and warmth that won her the title, John Matson of the Alabama Nursing Home Association said.
阿拉巴马州养老院协会的约翰·马特森称，是她的友善和热情使她夺冠。
A survey of 150,000 galaxies confirms predictions about dark energy, thought to be what's driving galaxies apart. John Matson reports.
对150,000个星系巡天证实关于暗能量的预测，认为暗能量驱使相邻的星系分离。约翰·马森报道。
A survey of 150,000 galaxies confirms predictions about dark energy, thought to be what's driving galaxies apart. John Matson reports.
对150,000个星系巡天证实关于暗能量的预测，认为暗能量驱使相邻的星系分离。约翰·马森报道。
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