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音頻科普：你生活在一個(gè)奇怪的太陽系
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音頻科普：你生活在一個(gè)奇怪的太陽系
?Astronomers found that other star systems tend to host similarly sized exoplanets—far different from ours.天文學(xué)家們發(fā)現(xiàn)，其他星系往往能承載大小相似的系外行星——而這與我們生活的星系截然不同。
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撰文\播音：克里斯托弗·因塔利亞塔（Christopher Intagliata）
翻譯：陳美娟
審校：郭曉
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The more astronomers study the heavens, the more they realize:?our solar system?is weird.?
關(guān)于星空，天文學(xué)家們研究的越多，他們?cè)桨l(fā)現(xiàn)：我們的太陽系是怪異的。
"There are?a few things that make the solar system kind of strange." Lauren Weiss, an astrophysicist at the University of Montreal. "One of which is we have a giant planet. Only about 10 percent of sunlike stars have a giant planet. And there are probably even fewer that have?two?giant planets."
“有幾樣事情讓太陽系看起來有點(diǎn)奇怪。”來自蒙特利爾大學(xué)的天體物理學(xué)家Lauren Weiss這么說。“其中一條是我們太陽系有一個(gè)巨大的行星。只有10%的類日星體有巨大的行星。而有兩顆巨型行星的就更少了。”
In addition to giant Jupiter and lesser giant Saturn, we have tiny Mercury—just a bit bigger than Earth’s moon.
除了巨大的木星和稍小些的土星，太陽系還有水星——它只比繞地的月球大一些。
So if we’re weird, what does a typical solar system look like? Weiss and her team trained their telescopes on 355 star systems known to host a handful of small exoplanets. And they found that most of the planets within individual star systems tended to be similar in size.
所以，如果我們太陽系的構(gòu)成是不合常理的，一個(gè)標(biāo)準(zhǔn)的太陽系應(yīng)該是什么樣子的呢？Weiss與她的團(tuán)隊(duì)將他們的望遠(yuǎn)鏡對(duì)準(zhǔn)了355個(gè)星系，這些星系已知能承載一些小型系外行星。他們發(fā)現(xiàn)，獨(dú)立星系中的絕大多數(shù)行星往往都有相同的大小。 ????
"So if I'm a planet, and I'm, say, two times the size of Earth, my neighbor, the next planet over, is also likely to be two times the size of Earth, give or take a little bit."
“如果我是一個(gè)星球，我有地球的兩倍大，那么住我旁邊的鄰居可能也有差不多地球的兩倍大?！?/span>
And they were strung out at similar distances from each other too…like peas in a pod, she says. Compared to that orderly array, our system looks more like, "Uh let's see, if I stick with food…I don't know…like a whole Thanksgiving dinner or something?"
這些星球一字排開，彼此間的距離也相似……就像豆莢里的豆子一樣，她說。與那種有序的排列相比，我們的星系看起來更像是，“呃讓我想想，如果我繼續(xù)用食物打比方……也許就像是感恩節(jié)的晚餐之類的吧？” ?????????????????????
The results are in?The Astronomical Journal. [Lauren M. Weiss et al.,?The California-Kepler Survey. V. Peas in a Pod: Planets in a Kepler Multi-planet System Are Similar in Size and Regularly Spaced]這項(xiàng)研究結(jié)果刊登在《天文學(xué)》雜志上。
As for hunting for?habitable?worlds: "If we're trying to find an Earth-sized planet in the habitable zone”—not too close to the star but not too far away either—“and we find an Earth-sized planet closer in, it might be worthwhile to continue searching for planets around that star."
在尋覓宜居的星球這點(diǎn)上：“如果我們想在宜居的范圍內(nèi)——離恒星要既不太遠(yuǎn)又不太近——找到一顆地球那么大的行星，并且確實(shí)在附近找到了一顆類地行星，那么那顆恒星周圍的行星值得繼續(xù)發(fā)掘?！?/span>
Because there might just be a few more peas in the pod.
因?yàn)槎骨v里可能還有還有更多豆子呢。
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?Astronomers found that other star systems tend to host similarly sized exoplanets—far different from ours.天文學(xué)家們發(fā)現(xiàn)，其他星系往往能承載大小相似的系外行星——而這與我們生活的星系截然不同。
?
撰文\播音：克里斯托弗·因塔利亞塔（Christopher Intagliata）
翻譯：陳美娟
審校：郭曉
?
The more astronomers study the heavens, the more they realize:?our solar system?is weird.?
關(guān)于星空，天文學(xué)家們研究的越多，他們?cè)桨l(fā)現(xiàn)：我們的太陽系是怪異的。
"There are?a few things that make the solar system kind of strange." Lauren Weiss, an astrophysicist at the University of Montreal. "One of which is we have a giant planet. Only about 10 percent of sunlike stars have a giant planet. And there are probably even fewer that have?two?giant planets."
“有幾樣事情讓太陽系看起來有點(diǎn)奇怪。”來自蒙特利爾大學(xué)的天體物理學(xué)家Lauren Weiss這么說。“其中一條是我們太陽系有一個(gè)巨大的行星。只有10%的類日星體有巨大的行星。而有兩顆巨型行星的就更少了。”
In addition to giant Jupiter and lesser giant Saturn, we have tiny Mercury—just a bit bigger than Earth’s moon.
除了巨大的木星和稍小些的土星，太陽系還有水星——它只比繞地的月球大一些。
So if we’re weird, what does a typical solar system look like? Weiss and her team trained their telescopes on 355 star systems known to host a handful of small exoplanets. And they found that most of the planets within individual star systems tended to be similar in size.
所以，如果我們太陽系的構(gòu)成是不合常理的，一個(gè)標(biāo)準(zhǔn)的太陽系應(yīng)該是什么樣子的呢？Weiss與她的團(tuán)隊(duì)將他們的望遠(yuǎn)鏡對(duì)準(zhǔn)了355個(gè)星系，這些星系已知能承載一些小型系外行星。他們發(fā)現(xiàn)，獨(dú)立星系中的絕大多數(shù)行星往往都有相同的大小。 ????
"So if I'm a planet, and I'm, say, two times the size of Earth, my neighbor, the next planet over, is also likely to be two times the size of Earth, give or take a little bit."
“如果我是一個(gè)星球，我有地球的兩倍大，那么住我旁邊的鄰居可能也有差不多地球的兩倍大?！?/span>
And they were strung out at similar distances from each other too…like peas in a pod, she says. Compared to that orderly array, our system looks more like, "Uh let's see, if I stick with food…I don't know…like a whole Thanksgiving dinner or something?"
這些星球一字排開，彼此間的距離也相似……就像豆莢里的豆子一樣，她說。與那種有序的排列相比，我們的星系看起來更像是，“呃讓我想想，如果我繼續(xù)用食物打比方……也許就像是感恩節(jié)的晚餐之類的吧？” ?????????????????????
The results are in?The Astronomical Journal. [Lauren M. Weiss et al.,?The California-Kepler Survey. V. Peas in a Pod: Planets in a Kepler Multi-planet System Are Similar in Size and Regularly Spaced]這項(xiàng)研究結(jié)果刊登在《天文學(xué)》雜志上。
As for hunting for?habitable?worlds: "If we're trying to find an Earth-sized planet in the habitable zone”—not too close to the star but not too far away either—“and we find an Earth-sized planet closer in, it might be worthwhile to continue searching for planets around that star."
在尋覓宜居的星球這點(diǎn)上：“如果我們想在宜居的范圍內(nèi)——離恒星要既不太遠(yuǎn)又不太近——找到一顆地球那么大的行星，并且確實(shí)在附近找到了一顆類地行星，那么那顆恒星周圍的行星值得繼續(xù)發(fā)掘?！?/span>
Because there might just be a few more peas in the pod.
因?yàn)槎骨v里可能還有還有更多豆子呢。
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