d라이브러리
"than"(으)로 총 170건 검색되었습니다.
- 토성의 테가 사라지고 있다과학동아 l199108
- than 0.7 grams per cubic centimeter. This is considerably less than the density of the other satellites and is less than the density of pure ice.Apparently, these satellites are m ...
- 우리의 조상인 실러캔스과학동아 l199108
- biologists believe that lungfish are the ancestors of the tetrapods, and that the presence of lungs is more important than the presence of coelacanth fins or of amino-acid chains. The chances a ...
- 가장 깊은 호수과학동아 l199107
- This is not so in the case of Lake Baikal.The hydrothermal vents in Baikal are found along a fault that is more than 11 miles from the axis of the rift valley floor. It is suspected that this ...
- 찾기 힘든 쿼크를 찾아서과학동아 l199107
- hardly hold itself together.Overgard and Ostgaard believe that if they can find a neutron star that rotates in less than 1/2,000 of a second, it will simply not be a neutron star, but will be a ...
- 왜 밤하늘은 어두운가?과학동아 l199106
- die, and as new stars form, will the total amount of light remain static?Or perhaps, as new stars form less frequently than old stars die, the light of the universe will gradually fade until th ...
- 좁혀지는 인간과 침팬지의 사이과학동아 l199105
- not accepted easily. This sort of gene sequence technique was tricky and it might easily have gone awry. Indeed, Jonathan Marks, of Yale, strongly objected to Sibley's results and even went so ...
- 거리 측정과학동아 l199105
- times.Nor is the distance of the Large Magellanic Cloud important just for it's own sake. There is much more to it than that.For the last 60 years or so, astronomers have been trying to determi ...
- 고향 찾아가는 희귀한 말과학동아 l199104
- mixed breeds. When this happens, and when one of the close pair of species is far smaller in number than the other, than the smaller numbermelts into the larger, and it is gone as an ind ...
- 빛의 굴절과학동아 l199104
- to account for gravitational effects. Some astronomers think that the missing mass is as much as 200 times greater than the mass we can see, but no one knows what the nature of the unseen mass ...
- 허블 망원경이 찍은 대폭풍과학동아 l199103
- however, it can still do, and one of them is to observe Saturn from space and get far more detailed pictures than we can possibly get from the bottom of our dusty, heat-trembling atmosphere.Th ...
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