Jack Lissauer of NASA's Ames Research Center at the American Astronomical Society meeting in Boston.

NASA艾姆斯研究中心的杰克·李索尔参加了在波士顿举行的美国天文学会会议。

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However, Jack Lissauer, a theoretical astrophysicist at NASA's Ames Research Center in Moffet Field, California, is much more optimistic.

然而，加州莫菲特场市美国国家航空航天管理局艾姆斯研究中心的理论天体物理学家杰克·利索尔对此要乐观得多。

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But Ames theorist Jack Lissauer says that if no transits are observable, it will be much harder to pin down the orbits and masses of these planets.

但是艾姆斯研究中心的理论家杰克·利索尔称，如果没有可以观察的凌日现象，要想确定这些行星的轨道情况和质量就会难得多。

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Investigator Jack Lissauer described the discovery.

VOA: special.2011.02.09

True, a year on this planet lasts just two Earth days, but NASA's Jack Lissauer says the planet feels quite a bit like home.

NPR: Astronomers Find Planet with Similarities to Earth

Mr. JACK LISSAUER (NASA): This is likely to be or plausibly the first rocky planet around a normal star other than the sun, and in that sense it's a class of planets like Earth.

NPR: Astronomers Find Planet with Similarities to Earth

Jack Lissauer, of NASA's Ames Research Centre, in California, and his team, have not only confirmed the existence of the six planets, they have worked out their orbital periods, diameters and, in all but one case, their masses.

ECONOMIST: The search for other Earths is hotting up