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"earth"(으)로 총 187건 검색되었습니다.
- 물이 많아지고 더워진다과학동아 198902
- than any other form of vegetation.And yet far from doing this, we are doing the opposite. The forests of the Earth are being chopped down at a huge rate, espacially in tropical countries such a ...
- 태양을 스쳐 지나가기과학동아 198901
- and taking up half the entire area of the sky. The comet would be getting 53,000 times as mush light and heat as the Earth gets.As it happens, comets are mostly ice. How do they endure all that ...
- 우주여행의 방향은?과학동아 198901
- is smaller than the one he is used to, but its properties will remain familiar. What would be impossibly foreign to an Earth person would be home-sweet-home to a settler.The settlers, then, bei ...
- 우주 오염과학동아 198812
- cases, far more dangerous than those bullets we fire out of guns.There are about 300 operating satellites orbiting Earth right now, but there are many more satellites that, though they have cea ...
- 한쪽으로 늘어진 위성과학동아 198811
- the original "planetesimals" out of which the outer planets were formed.The Schaefers have been studying Nereid from Earth and they find that the light that it reflects is not quite like that o ...
- 행성군(群)과학동아 198811
- In other words, with these reports, astronomers are bound to be a little readier to believe that there are numerous Earth-like planets in the galaxy (and in other galaxies as well.) This is imp ...
- 동요하는 지구과학동아 198810
- which is why the Chandler wobble is larger some years than others.But it doesn't take an earthquake to make the Earth wobble. Any shift in Earth's mass distribution, even a tiny ...
- 번개와 생명과학동아 198809
- 5 1/ 2 tons of nitrogen oxide per second.Franzblau and popp calculated that this means that lighting supplies the Earth not with 10 percent of the nitrogen oxide that life consumes, but 50 perc ...
- 별을 본다는 것(점성술)과학동아 198808
- might Reagan be attracted to it?In ancient times, it was apparent that the sun and moon had an important influence on Earth. The sun supplied light and warmth by day and controlled the seasons, ...
- 자리 바뀐 섬과학동아 198807
- Columbus recorded its readings but the direction in which the compass needle points, as measured at a specific spot on Earth's surface, varies from year to year and we don't know exactly what t ...
