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(单词翻译)
This is Scientific American’s 60-Second Science. I’m Adam Hinterthuer. Got a minute?
If there's a line in Vegas on the odds1 of life on another planet, now might be a good time to place a wager2. A study in the journal Science examined 166 Sun-sized stars and found nearly one in four had rocky, earth-sized planets in close, earth-like orbits. The finding might chart a new course for extrasolar planet research.
Most planet-formation models predict a “planet desert” within one astronomical3 unit (or the average distance from the Earth to the Sun) of a host star. Gaseous4 planets like Jupiter or Saturn5, which form much farther away, on the cold side of what’s called the “ice line,” are thought to be more common.
But a team of researchers at Hawaii's Keck observatory6 cast their eyes on stars similar to our Sun. Twenty-three percent of those stars had small, rocky planets orbiting right in the range where the predicted “planet desert” should be.
The researchers say their discovery calls for substantial revisions to current astronomical models. It also makes the possibility of life on some similar planet spinning a similar, habitable distance from its sun seem like a better bet.
Thanks for the minute. For Scientific American’s 60-Second Science. I’m Adam Hinterthuer.
1 odds | |
n.让步,机率,可能性,比率;胜败优劣之别 | |
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2 wager | |
n.赌注;vt.押注,打赌 | |
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3 astronomical | |
adj.天文学的,(数字)极大的 | |
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4 gaseous | |
adj.气体的,气态的 | |
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5 Saturn | |
n.农神,土星 | |
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6 observatory | |
n.天文台,气象台,瞭望台,观测台 | |
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