全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Bob Berman
来源:[J].Natural History(IF 0.176), 2019, Vol.127 (4), pp.24-27ProQuest
作者:Bob Berman , 尚健
来源:[J].新东方英语, 2005, (Z1), pp.126-129CNKI
摘要:<正>一年之中最著名的满月使人想起月亮与我们的文化是如此的紧密相连。几千年以来,人们仰望月亮不仅仅是为了记录时光的流逝,而且还为了纪念生命的循环, 人们甚至还对月亮发出由于人生短暂多舛,人类...
被引频次:-下载频次:25
作者:Bob Berman , 尚健
来源:[J].新东方英语, 2005, (Z1), pp.126-129CNKI
摘要:<正>一年之中最著名的满月使人想起月亮与我们的文化是如此的紧密相连。几千年以来,人们仰望月亮不仅仅是为了记录时光的流逝,而且还为了纪念生命的循环, 人们甚至还对月亮发出由于人生短暂多舛,人类...
被引频次:-下载频次:26
作者:Bob Berman
来源:[J].Astronomy, 2016, Vol.44 (2), pp.10ProQuest
摘要:By contrast, the highlands at the bottom (south end) of the Moon are chaotic with impact holes. [...]here and there, a crater like Archimedes (the biggest crater just to the upper leftof the Apennines) marks a recent impact. The scarcity of craters embedded in the smooth maria is...
作者:Bob Berman
来源:[J].Astronomy, 2016, Vol.44 (3), pp.28-33ProQuest
摘要:[...]chocolate milk. Because most other elements readily merge with it and soak it up like a sponge, no celestial body has significant free oxygen. [...]nobody knew that air is a mix of gases. Because oxygen bonds so easily with most other elements, it makes up two-thirds of anim...
作者:Bob Berman
来源:[J].Astronomy, 2016, Vol.44 (3), pp.10ProQuest
摘要:The weirdest thing that happened on the Moon was caused by Neil Armstrong disobeying his training. Result: The exterior ladder did not extend to the surface. [...]those first astronauts had to leap from the bottom rung. Eclipse expert Fred Espenak told me of a time in Africa when...
作者:Bob Berman
来源:[J].Astronomy, 2016, Vol.44 (4), pp.10ProQuest
摘要:Start with Galileo. Since no one had pointed a telescope at the sky before, he was bound to get surprises. The 1967 discovery of the first neutron star revealed a sun smaller than Hawaii, whose material is so dense that each speck equals a cruise ship crushed down to the size of ...
作者:Bob Berman
来源:[J].Astronomy, 2016, Vol.44 (6), pp.8ProQuest
摘要:A supernova is nine orders of magnitude brighter, but we'll never see one up close, because no star in our region of the galaxy is massive enough to pop. By the time the light spreads out and gets here, each square meter of Earth's surface (the size of a wall poster) is illuminat...
作者:Bob Berman
来源:[J].Astronomy, 2016, Vol.44 (5), pp.8ProQuest
摘要:Happily, lots of distant galaxies lie in that direction, like the edgewise beauty NGC 4565 and the scarily massive ball-shaped M87. Sure enough, they form a wide, low band running from near Sirius through Orion and into Auriga, which marks the direction opposite the galaxy's cent...
作者:Bob Berman
来源:[J].Astronomy, 2016, Vol.44 (7), pp.6ProQuest
摘要:Mike, as the device was known, held supercold liquid deuterium (hydrogen's heavier cousin) for fuel and a fission bomb to light the fuse. Yet even the Sun's fusion process converts only 0.7 percent of its four hydrogen atoms' mass into energy, leaving the rest behind mostly as di...

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