評論
打印
Many aspects, like its geological past, are a mystery. But some things we do know, this lonely planet has strange science of keeping time. Once you arrive, you have to reset your watch for a time zone like no other. It has such unusual orbit and rotation period. The days and nights are, are very strange. A mercurial year is just 88 earth days long, thanks to its quick sprint around the sun. But it rotates so slowly a single day takes much longer.
許多方面,就像它的過去地質,是一個謎。但是有些事情我們知道,這個孤獨星球有著奇怪的科學時間。一旦你到達時,你不像其他地方因為一個時區而重置你的表。它有著非比尋常的軌道和旋轉的時期。日日夜夜非常奇怪。水星的一年只相當于地球的88天,這都是由于其快速圍繞著太陽轉所致。但它轉動得如此之慢,所以一天需要更長時間。
The day on mercury is more than half a year, eh, earth terms. Although known to us since ancient times for thousands of years, we had little idea what the planet really looked like. Then in 1974, NASA's Mariner 10 sent us back the first ever glimpses of its surface. Pictures can be transmit to tracking stations and onto Jeffery Portion Laboratory in California. Due to mercury's slower rotation and its ellipse orbit on the sun, when it flew by three times, it saw the same half of the planet. So we've really only seen something like 45% of the planet relatively low resolution.
在水星的一天相當于半年多時間,呃,這是按照地球的術語。雖然我們知道自古以來,幾千年來,我們根本不知道這個星球的實際樣子。接著在1974年,美國宇航局的水手10號給我們帶回有史以來第一次它的表面掠影。照片被傳送到追蹤站之后到達加州杰弗瑞·波頓實驗室。由于水星慢軌道旋轉和它在太陽上的橢圓軌道,它以3倍速度旋轉。它看到了同樣的一半的星球。所以我們真的只看到類似的45%的相對低分辨率的這個星球。
Hidden in these fuzzy black and white postcards for over 30 years are clues that point to one of mercury's biggest puzzles. It's been shrinking. Mercury doesn't have plate tectonics like here does. So we know that mercury's crust is under a lot of compressure. Mere way can really do that is if the planet shrank. You can take as this incredible, shrinking planet. As Mariner 10 flies past, the mystery deepens. This spacecraft detects a vast iron core hidden inside.
隱藏在這些模糊黑白明信片后30多年來的是一個指向水星最大的困惑的線索。它正在縮小。水星沒有板塊構造。所以我們知道水星的地殼承受很大的壓力。如果這個星球縮小，我們無能為力。你可以當這難以置信,萎縮的星球。作為水手10號已經探秘過的星球，這加深了神秘。太空船偵測到其中隱藏著一個巨大的鐵核心。
注：聽力文本來源于普特
