추천검색어
어스
d라이브러리
"earth"(으)로 총 218건 검색되었습니다.
- 물이 많아지고 더워진다과학동아 1989년 02호
- 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 ...
- 산불의 냉각효과과학동아 1989년 02호
- its beginnings in 1980, when it was first suggested that an asteroid or comet, 10 milles across, may have struck the Earth 65 million years ago and produced a disaster that destroyed much of li ...
- 우주여행의 방향은?과학동아 1989년 01호
- 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 ...
- 태양을 스쳐 지나가기과학동아 1989년 01호
- 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 ...
- 우주 오염과학동아 1988년 12호
- 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 1988년 11호
- 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 1988년 11호
- 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 1988년 10호
- 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 1988년 09호
- 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 1988년 08호
- 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, ...
