D라이브러리

relative to the stars, and the ancient Babylonians found that five bright stars(the planets we now call Mercury, Venus, Mars, Jupiter and Saturn) did likewise. Since the sun and moon exerted an important influence on Earth, shouldn't these other stars do so, too? the ancients therefore invented planetary influences, based on various fanciful and mythological beliefs, and this was astrology.It ...

again and it will become a "white dwarf." About this small remnant, the outer planets will still circle, but Mercury, Venus, the moon, and Earth will be gone forever.But remember, this won't happen for billions years, so there's plenty of time for humanity and its descendants to prepare, assuming they avoid other kinds of disaster. Surely, by then, humanity will have practical interstellar ...

행성이 아닐까? 그래서 우선 금성과 화성에 탐사선을 보내기로 하였다. 소련은 '비너스'(Venus)계획을 세워 연속하여 금성탐사에 나서기 시작했다. 미국도 '마리너'(Mariner)탐사선을 만들어 금성 및 화성탐사에 나섰다. 소련은 66년3월에 사상처음으로 '비너스3호를 금성에 보내 명중시켰다. 그후 계속 ...