d라이브러리
"planet"(으)로 총 76건 검색되었습니다.
- 허블 망원경이 찍은 대폭풍과학동아 l199103
- close up - that planet being a virtual twin of Uranus but even farther from the sun - astronomers expected to see a planet as quiet as Uranus. Instead, they found Neptune's atmosphere to ...
- 블랙홀이 지구에도 있는가?과학동아 l199101
- the Earth as a whole without geologists having to suppose that there is a large nickeliron core at the center of the planet. The Earth might be all rock instead.Again, there are "hot spots" in ...
- 상처를 찾아라과학동아 l199008
- the action of wind, water and life, but their circular structure can still be seen from the air - visible scars on the planet.The fossil craters we know best were only formed in the last one or ...
- 20년후-달의 신비를 벗기며과학동아 l198910
- 20년 전 이번주, 즉 1969년 7월 20일 인류는 최초로 지구 이외의 세계에 발을 디뎠다. '닐 암스트롱'은 달의 표면에 내리면서 "이것은 한 인간에게는 작은 발 ... what took place on the early Earth, too. The clues we find there might help us figure out how life bega ...
- 녹색 식물의 탄생 How Green Plants Began?과학동아 l198909
- of the complicated type that make up plants and animals formed about 1.4 billion years ago. By that time, though, the planet Earth had already existed for 3.2 billion years, so there was a long ...
- 지하생활과학동아 l198907
- of ourselves and our works we place underground, below the realm of burrowing life, the more room there will be on the planet for other forms of life.Fourth, nature would be closer. It might se ...
- 마지막 남은 청정지역과학동아 l198906
- gulls, seals, dolphins and whales. If we damage the region badly, we tear an enormous hole in the fabric of the planetary ecology. Remember that every part depends on every other part, so that ...
- 대기권 밖의 망원경과학동아 l198904
- that are much closer than the stars, objects that are in our own solar system. Our probes have shown us the outer planets-Jupiter, Saturn, Uranus, and, soon, Neptune-far more clearly and in far ...
- 한쪽으로 늘어진 위성과학동아 l198811
- every 6.4 days. This represents its time of rotation, as it turns brighter and darker areas toward us.Then, too, the planet Saturn has a satellite named Iapetus that shows an even greater varia ...
- 행성군(群)과학동아 l198811
- Earth-like planets in the galaxy (and in other galaxies as well.) This is important, because the more Earth-like planets there are, the greater the chance that at least some of them will ...
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