d라이브러리
"year"(으)로 총 90건 검색되었습니다.
- 가장 깊은 호수과학동아 l199107
- in the mid-1990 by a team led by Kathleen Crane of Hunter College's Department of Geology and Geography.In recent years, it has been discovered that the oceans have places where there are "hot ...
- 줄어드는 삼각주과학동아 l199102
- which is sinking, that means that Mediterranean sea is advancing inward.Stanley estimates that in the next hundred years the sea will advance inward some 18 miles, and perhaps more if there is ...
- 보이지 않았던 별과학동아 l199009
- glorious evening star. It was so bright that it was visible in the daytime for 23 days, and at night for nearly two years before it faded away and disappeared - - at its brightest it actually c ...
- 우주적 위험과학동아 l199005
- gravity conditions.But what if we talk about a flight to Mars where the astronauts would have to remain in space for a year and a half? What if we imagine people working on the moon over extend ...
- 두 사람과학동아 l199003
- Survey in Menlo Park, Calif., and his Spanish colleagues have found Aurignacian materials that seem to be 40,000 years old.If so, modern man collided with Neanderthal man, and the question is : ...
- 화성을 다시 찾다과학동아 l199002
- many astronomer are convinced, may have come from Mars.One of these meteorites was carefully analyzed earlier this year by a team of British astronomers under Ian P. Wright. In it, small amoun ...
- 대 해빙과학동아 l198912
- all at once, to from the drumlin fields of northern Saskatchewan. The Amazon River, the largest on Earth, takes ten years to discharge 20,000 cubic miles of water into the Atlantic Ocean, but ...
- 공룡의 죽음-열쇠가 되는 아미노산과학동아 l198911
- the time of 65 million years in the past. Perhaps they were originally in the right line but, in all those millions of years, they've managed to drift through the rocks up and down. That ...
- 귀소하는 거북과학동아 l198907
- If scientists could somehow determine whether Ascension Island has been in uninterrupted existence for 40 million years, that would help them determine which theory of the green turtle's behavi ...
- 예수의 수의과학동아 l198905
- particles.The results in the case of the shroud were clear. The linen had been part of living flax plants 700 years ago. The shroud was manufactured, therefore, not long before it was first dis ...
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