The first is a pair of planets, each about the mass of Jupiter, that whirl around their home star 15 light years from Earth in perfect lockstep.

第一个是一对质量与木星差不多的行星，这对行星步调一致地围绕距离地球15光年的母恒星旋转。

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The exoplanet is a few times the mass of Earth, but it should still be small enough to be rocky rather than a gas giant like Jupiter.

这个系外行星的质量是地球的几倍，但是它足够小，能够由岩石构成，而不是像木星是一团巨大的气体。

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It's clearly not a star now, and it's about the mass of Jupiter.

现在，它显然不是恒星，并且质量与木星相当。

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Each of the three distant worlds is roughly 10 times the mass of Jupiter.

MSN: Wild solar system spotted around distant star?

Two further sine waves emerged in 2002, corresponding to one planet that has the mass of Saturn and is also orbiting more closely than Mercury, and another with four times the mass of Jupiter that is located in what would be Jupiter's orbit.

ECONOMIST: Extrasolar planets

An international team of researchers said the so-called protoplanet has a mass that appears to be at least the size of Jupiter, and perhaps two to three times larger.

WSJ: Possible New Planet Spotted Under Formation